LinkedIn had 590 million members -- though back in 2016 Microsoft conceded that less than 25% of the service's members were active. Yet CNBC recently shared estimates that 95% of recruiters are using LinkedIn to find candidates, and touted a new tool called "LinkedIn Hashtags" which lets companies highlight policies like "#dogfriendly" or "#freelunch".

But is LinkedIn really helpful for job-seekers? An anonymous Slashdot reader writes: I'm on unemployment and am looking for a new job, and I've been told "Oh, you need to be on LinkedIn if you want to be taken seriously!" So I go there, and it looks like Facebook or something, wants to scrape my email contacts, upload pictures, and so on.

Is LinkedIn really necessary, or is it just a ruse to get me to give them all sorts of personal information like all other social media sites?
"I'm also unemployed and looking for a job," adds another anonymous Slashdot reader, "and have all my crap on Linkedin and Indeed, and have been using them to apply left and right. If they aren't useful anymore I'm essentially sitting on my hands doing nothing." But Slashdot reader tomhath insists that LinkedIn "was never relevant. Their motto was that you didn't exist if you're not there -- but that was only their marketing hype, not reality."

Leave your own thoughts in the comments. Is LinkedIn still relevant?

"Scientists from NASA's New Horizons mission released the first detailed images of the most distant object ever explored," reports the Johns Hopkins Applied Physics Lab (which is operating the spacecraft). "Its remarkable appearance, unlike anything we've seen before, illuminates the processes that built the planets four and a half billion years ago."

Tablizer (Slashdot reader #95,088) shares their report: "The new images -- taken from as close as 17,000 miles (27,000 kilometers) on approach -- revealed Ultima Thule as a "contact binary," consisting of two connected spheres. End to end, the world measures 19 miles (31 kilometers) in length. The team has dubbed the larger sphere "Ultima" (12 miles/19 kilometers across) and the smaller sphere "Thule" (9 miles/14 kilometers across). The team says that the two spheres likely joined as early as 99 percent of the way back to the formation of the solar system, colliding no faster than two cars in a fender-bender...

Data from the New Year's Day flyby will continue to arrive over the next weeks and months, with much higher resolution images yet to come.
Space.com reports that astronomers are now hunting for moons near Ultima Thule. At a Thursday news conference, a New Horizons co-investigator from the SETI Institute explained that the rotation of Ultima Thule appears to have been slowed by orbiting moons, and the discovery of "Any moon at all, on any orbit at all, will tell us the mass and the density to pretty decent usable precision." Although it's also possible that the moons of Ultima Thule have since drifted away.

Space.com adds that the New Horizons spacecraft "has enough fuel and power, and is in good enough health, to potentially fly past a third object, if NASA grants another mission extension."

Long-time Slashdot reader foxalopex writes: It looks like Nvidia is going to be hit with a class action for investors who lost big when their stock price crashed more than 50% due to an overstock of GPU cards that were produced for the crypto-currency craze back in 2018. The suit claims investors were told Nvidia had control of the situation until it crashed worse than even Nvidia had anticipated.
"The Company's public statements were false and materially misleading," argues the complaint from a Los Angeles law firm, seeking investors who purchased shares in NVIDIA between August 10, 2017 and November 15, 2018.

It was on November 15 that NVIDIA issued a statement that "excess channel inventory post the crypto-currency boom...will be corrected." Citing new products for machine learning, film rendering, and cloud computing, they added that "Our market position and growth opportunities are stronger than ever."

General Motors was once the world's most profitable company -- for two decades -- and by 1970 its revenue was $22.8 billion (or $152 billion in today's dollars). But five weeks ago GM announced that it was finally ending small-car production and closing its Lordstown Assembly plant in Youngstown, Ohio.

So what went wrong? Quartz argues that GM's decline "began with its quest to turn people into machines," as "the company turned assembly work into an interlocking chain of discrete tasks, to be executed by robots whenever possible." In an article shared by Slashdot reader reporter, Quartz argues that seen in that light, the company's response to a 1972 strike "marked the beginning of the company's long but uneven descent, which would be characterized by a repeated impulse to bet on fancy, futuristic but unproven technologies while undervaluing its workers."

But the strike also raised larger issues for "a massive special task force" issuing a federal report on the quality of working life in 1972, titled Work in America... [T]echnology had failed in its promise to free humans from drudgery and wring profit from their talents, the authors said. On the contrary, the new jobs created generally required minimal expertise and therefore prevented workers from honing their skills. That stymied career mobility and left people mired in the same torpor of boredom for decades. Despite this, America continued to offer its young people increasingly rigorous education -- even as work life left little opportunity to apply it.... The larger hopes and ambitions of Work in America -- the vision that saw satisfying work itself as essential to the health of American society and democracy -- exists now as little but a curio in the footnotes of academic journals....

Meanwhile, GM continued to lavish spending on big capital investments, confident that the secret to competitiveness lay in replacing humans with technology. But as in Lordstown, the spending bore little fruit. As automotive analyst Maryann Keller recounted in her 1989 book Rude Awakening, one GM executive observed that, between 1980 and 1985, the company shelled out an eye-popping $45 billion in capital investment. Despite that spending, its global market share rose by but a single percentage point, to 22%. "For the same amount of money, we could buy Toyota and Nissan outright," said the executive -- which would have instantly bumped GM's market share to 40%.
At GM quality suffered because "Instead of making flawless cars, workers simply did their assigned jobs," Quartz argues. "Workers had no big-picture goal of building cars together to motivate them."

The 7,000-word article concludes by noting that Youngstown residents still hope that their car factory will re-open. But it's also possible that instead Lordstown Assembly "will remain standing, but empty, a vast roadside reminder of a corporate elite's doomed quest to cheapen labor by stripping the human need for skill, learning, independence, and purpose out of production, by reimagining people as machines."

An anonymous reader quotes a report from The Independent: China will introduce the world's first driverless trains to run at speeds of up to 217 mph (350 km/h) on the Beijing-Zhangjiakou railway line. The automatic operation bullet trains were trialled on a section of the Beijing-Shenyang line in 2018 by the China Railway Corporation (CRC) and the system passed all safety tests. "The bullet train can automatically depart, operate between stations and adjust the train's operation to meet its precise timetable after a single button is pressed," a researcher from China Academy of Railway Sciences told the Sciences and Technology Daily. A driver currently performs these operations on high-speed trains.

For the first 10 years of the high-speed ATO trains, an attendant will still be deployed on board to ensure nothing goes wrong. After that, the trains will be totally driverless. Experts say this should improve safety long-term. "An automatic driving system could greatly improve the safety of trains which run on high-speed railways, compared with human drivers who may have sudden health problems or disregard safety precautions during driving," Sun Zhang, a railway expert and professor at Shanghai Tongji University, told the Global Times. The Beijing-Zhangjiakou Line is currently being constructed for the 2022 Winter Olympic Games, "to enable easy travel between Beijing and the Winter Olympic Village in 50 minutes," the report says.

NASA's asteroid-chasing Osiris-Rex spacecraft has been placed in an orbit around Bennu, an asteroid that drifts through the solar system's asteroid belt between Earth and Mars. "By inserting itself into orbit around Bennu, Osiris-Rex will survey the asteroid from a distance of only about 1 mile (1.75 kilometers) from its center," reports CNET. "Bennu's small size creates an incredibly tiny gravitational force, so maintaining that orbit will require lots of little adjustments, made by NASA and its collaborating organizations." From the report: "The gravity of Bennu is so small, forces like solar radiation and thermal pressure from Bennu's surface become much more relevant and can push the spacecraft around in its orbit much more than if it were orbiting around Earth or Mars, where gravity is by far the most dominant force," said Dan Wibben, maneuver and trajectory design lead. NASA also released a GIF of the various surveys Osiris-Rex carried out after arriving at Bennu in early December The series of images, captured between Nov. 30 and Dec. 31, helped the team more accurately determine Bennu's mass, which ensured that the orbital insertion would proceed smoothly.

The orbital period, lasting until mid-February, is expected to provide additional details about Bennu's gravity, orientation and spin, along with a better understanding of its mass. All those observations should lead to completing one of the chief objectives for Osiris-Rex: retrieve a sample from Bennu's surface and fly it back to Earth. In 2020, the spacecraft will extend a specially designed arm, called Tagsam, for a brief high-five with the asteroid. The arm will blow nitrogen gas onto the surface of Bennu, kicking up handfuls of dirt, which the spacecraft will fly back to Earth in 2023.

The "super blood wolf moon eclipse" is coming to a sky near you later this month. "The total lunar eclipse will start late on Sunday, Jan. 20 and finish early on Monday, Jan. 21," reports USA Today. Slashdot reader Zorro shares the report: Total lunar eclipse: A total lunar eclipse occurs when the moon and the sun are on exact opposite sides of Earth, according to NASA. When this happens, Earth blocks the sunlight that normally reaches the moon. Instead of that sunlight hitting the moon's surface, Earth's shadow falls on it. Starting at 9:36 p.m. EST Jan. 20, skywatchers will notice a "little notch is taken out of the moon," according to Brian Murphy, director of Indiana's Holcomb Observatory & Planetarium and Butler University professor. At 10:34 p.m., it moves into a partial eclipse, and starting at 11:41 p.m., the full eclipse begins; a maximum eclipse occurs at 12:12 a.m. Jan. 21. The total eclipse ends at 12:44 a.m.

Supermoon: A supermoon occurs when the full moon is at the closest point of its orbit to the Earth (perigee). That makes the moon look extra-close and extra bright -- up to 14% bigger and 30% brighter than a full moon at its farthest point from Earth, known as the apogee, NASA said. This is the first of three supermoons in 2019. The others will be on Feb. 19 and March 21. Of these, the Feb. 19 full moon will be the closest and largest full supermoon of 2019.

"Blood" moon: That is just the reddish color the moon will appear during the total lunar eclipse.

"Wolf" moon: According to the Old Farmer's Almanac, Native Americans called the January full moon the "wolf" moon because it appeared when wolves howled in hunger outside the villages.

An anonymous reader quotes a report from Science Magazine: How far will Plan S spread? Since the September 2018 launch of the Europe-backed program to mandate immediate open access (OA) to scientific literature, 16 funders in 13 countries have signed on. That's still far shy of Plan S's ambition: to convince the world's major research funders to require immediate OA to all published papers stemming from their grants. Whether it will reach that goal depends in part on details that remain to be settled, including a cap on the author charges that funders will pay for OA publication. But the plan has gained momentum: In December 2018, China stunned many by expressing strong support for Plan S. This month, a national funding agency in Africa is expected to join, possibly followed by a second U.S. funder. Others around the world are considering whether to sign on. Plan S, scheduled to take effect on 1 January 2020, has drawn support from many scientists, who welcome a shake-up of a publishing system that can generate large profits while keeping taxpayer-funded research results behind paywalls. But publishers (including AAAS, which publishes Science) are concerned, and some scientists worry that Plan S could restrict their choices.

If Plan S fails to grow, it could remain a divisive mandate that applies to only a small percentage of the world's scientific papers. (Delta Think, a consulting company in Philadelphia, Pennsylvania, estimates that the first 15 funders to back Plan S accounted for 3.5% of the global research articles in 2017.) To transform publishing, the plan needs global buy-in. The more funders join, the more articles will be published in OA journals that comply with its requirements, pushing publishers to flip their journals from paywall-protected subscriptions to OA, says librarian Jeffrey MacKie-Mason, the chief digital scholarship officer at the University of California, Berkeley. North America isn't onboard. "The Bill & Melinda Gates Foundation was the first Plan S participant outside Europe, and another private funder may follow," the report says. "But U.S. federal agencies are sticking to policies developed after a 2013 White House order to make peer-reviewed papers on work they funded freely available within 12 months of publication."

Canada also isn't ready to change their joint 2015 OA policy. "Plan S is 'a bold and aggressive approach, which is why we want to make sure we've done our homework to ensure it would have the best effect on Canadian science," says Kevin Fitzgibbons, executive director of corporate planning and policy at Canada's Natural Sciences and Engineering Research Council in Ottawa.

Outside Europe and North America, funders gave Science mixed responses about Plan S. "India, the third biggest producer of scientific papers in the world, will 'very likely' join Plan S, says Krishnaswamy VijayRaghavan in New Delhi, principal scientific adviser to India's government," reports Science. "But the Russian Science Foundation is not planning to join. South Africa's National Research Foundation says it 'supports Plan S in principle,' but wants to consult stakeholders before signing on. Jun Adachi of the National Institute of Informatics in Tokyo, an adviser to the Japan Alliance of University Library Consortia for E-Resources, says that despite interest from funders and libraries, OA has yet to gain much traction in his country."

MojoKid writes: College students used to have to fend for themselves at the campus convenient store but soon may have the snacks coming to them courtesy of a new delivery service. The PepsiCo Hello Goodness Snackbot, an autonomous delivery robot, will now run snacks around select college campuses to satiate whatever case of the munchies it can. Students, staff, and faculty at the University of Pacific in Stockton, California can now order snacks between 9AM and 5PM through the Snackbot app, which is currently only available on iOS. The robot will deliver goods at 50 designated Snackbot areas across campuses. The delivery bot can go more than 20 miles on a single charge and includes a camera, headlights, and all-wheel drive to help it navigate through tough terrain if need be. The Snackbots are part of the company's goal of expanding the reach of their healthier product lines to 50,000 points of presence by the end of 2019.

Researchers at the University of Maryland have managed to trick Google's reCaptcha system by using Google's own speech-to-text service. "[The researchers] claim that their CAPTCHA-fooling method, unCaptcha, can fool Google's reCaptcha, one of the most popular CAPTCHA systems currently used by hundreds of thousands of websites, with a 90 percent success rate," reports Motherboard. From the report: The researchers originally developed UnCaptcha in 2017, which uses Google's own free speech-to-text service to trick the system into thinking a robot is a human. It's an oroborus of bots: According to their paper, UnCaptcha downloads the audio captcha, segments the audio into individual digit audio clips, uploads the segments to multiple other speech-to-text services (including Google's), then converts these services' responses to digits. After a little homophone guesswork, it then decides which speech-to-text output is closest to accurate, and uploads the answer to the CAPTCHA field. This old method returned an 85% success rate.

After the release of that version of unCaptcha, Google fixed some of the loopholes that made it work, including better browser automation detection and switching to spoken phrases, rather than digits. The researchers claim that their new method, updated in June, gets around these improvements and is even more accurate than before, at 90 percent. "We have been in contact with the ReCaptcha team for over six months and they are fully aware of this attack," the researchers write. "The team has allowed us to release the code, despite its current success."

An anonymous reader quotes a report from The Daily Beast: Untold riches are promised on Mystery Brand, a website that sells prize-filled "mystery boxes." If you buy one of the digital boxes, some of which cost hundreds of dollars, you might only get a fidget spinner -- or you might get a luxury sports car. For just $100, users can win a box filled with rare Supreme streetwear. For only $12.99, they can win a Lamborghini, or even a $250 million mega-mansion billed as "the most expensive Los Angeles realty." Or at least that's what some top YouTubers have been telling their young fans about the gambling site -- with the video stars apparently seeing that as a gamble worth taking, especially after a dip in YouTube advertising rates.

Over the past week, hugely popular YouTube stars like Jake Paul and Bryan "Ricegum" Le have encouraged their fans to spend money on Mystery Brand, a previously little-known site that appears to be based in Poland. In their videos, Paul and Le show themselves betting hundreds of dollars on the site for a chance to open a digital "box." At first, they win only low-value prizes like fidget spinners or Converse sneakers. By the end of the video, though, they have won thousands of dollars worth of tech and clothing, like rare pairs of sneakers or Apple AirPods. If they like the prize, the YouTube stars have it shipped to their house. The gambling site doesn't list the owner or location where it's based, although the site's terms of service say it's "subject to the laws and jurisdiction of Poland." To make matters worse, users of the site might not even receive the items they believed they have won. "During using the services of the website You may encounter circumstances in which Your won items will not be received," the terms of service reads.

Also, while the ToS say that underage users are ineligible to receive prizes, many of the YouTubers promoting the site have audiences who are underage. "[Jake Paul], for example, has acknowledged that the bulk of his fanbase is between 8 and 15 years old," reports The Daily Beast.

According to a new study published in the journal EClinicalMedicine, the link between social media use and depressive symptoms in 14-year-olds may be much stronger for girls than boys. CNN reports: Among teens who use social media the most -- more than five hours a day -- the study showed a 50% increase in depressive symptoms among girls versus 35% among boys, when their symptoms were compared with those who use social media for only one to three hours daily. Yet the study, conducted in the UK, showed only an association between social media use and symptoms of depression, which can include feelings of unhappiness, restlessness or loneliness. The findings cannot prove that frequent social media use caused depressive symptoms, or vice versa. The study also described other factors, such as lack of sleep and cyberbullying, that could help explain this association.

For the study, researchers analyzed data on 10,904 14-year-olds who were born between 2000 and 2002 in the United Kingdom. The data, which came from the UK Millennium Cohort Study, included information from questionnaires on the teens' depressive symptoms and social media use. Depressive symptoms were recorded as scores, and the researchers looked at which teens had high or low scores. They found that on average, girls had higher depressive symptom scores compared with boys. The researchers also found that girls reported more social media use than boys; 43.1% of girls said they used social media for three or more hours per day, versus 21.9% of boys. The data showed that for teens using social media for three to five hours, 26% of girls and 21% of boys had depressive symptom scores higher than those who used social media for only about one to three hours a day. As for the gender gap, Yvonne Kelly, first author of the study and professor of epidemiology and public health, believes it has to do with "the types of things that girls and boys do online."

"In the UK, girls tend to more likely use things like Snapchat or Instagram, which is more based around physical appearance, taking photographs and commenting on those photographs," she said. "I think it has to do with the nature of use."

More than 100 million devices with Alexa on board have been sold. From a report: That's the all-too-rare actual number that Amazon's SVP of devices and services, Dave Limp, revealed to me earlier this week. That's not to say Amazon has finally decided to be completely transparent about device sales, however. While the company claims it outstripped its most optimistic expectations for the Echo Dot during the holiday season, Limp wouldn't give a number for that. Instead, Limp says, Amazon is sold out of Dots through January, despite "pushing pallets of Echo Dots onto 747s and getting them from Hong Kong to here as quickly as we possibly could."

Early last year, Netflix allowed some iOS users in more than two dozen markets to bypass the iTunes payment method as part of an experiment. The streaming company is now incorporating the change globally, curbing a $256 million revenue stream for Apple. "According to new data compiled by Sensor Tower, Netflix grossed $853 million in 2018 on the iOS App Store," reports TechCrunch. "Based on that figure, Apple's take would have been around $256 million, the firm said." The new policy change allows Netflix to avoid paying the 15% levy that Apple charges on in-app subscriptions. From a report: "We no longer support iTunes as a method of payment for new members," a Netflix spokesperson told VentureBeat. Existing members, however, can continue to use iTunes as a method of payment, the spokesperson added.

The company did not share exactly when it rolled out the change globally, but a support representative VentureBeat spoke with pegged the timeframe as late last month. Additionally, the support rep added that customers who are rejoining Netflix using an iOS device, after having canceled payment for at least one month, also won't be able to use iTunes billing. The move, which will allow Netflix to keep all proceeds from its new paying iPhone and iPad customers, underscores the tension between developers and the marquee distributors of mobile apps -- Apple and Google.

An anonymous reader quotes a report from IEEE Spectrum: Ethereum mining consumes a quarter to half of what Bitcoin mining does, but that still means that for most of 2018 it was using roughly as much electricity as Iceland. Indeed, the typical Ethereum transaction gobbles more power than an average U.S. household uses in a day. "That's just a huge waste of resources, even if you don't believe that pollution and carbon dioxide are an issue. There are real consumers -- real people -- whose need for electricity is being displaced by this stuff," says Vitalik Buterin, the 24-year-old Russian-Canadian computer scientist who invented Ethereum when he was just 18.

Buterin plans to finally start undoing his brainchild's energy waste in 2019. This year Buterin, the Ethereum Foundation he cofounded, and the broader open-source movement advancing the cryptocurrency all plan to field-test a long-promised overhaul of Ethereum's code. If these developers are right, by the end of 2019 Ethereum's new code could complete transactions using just 1 percent of the energy consumed today.