santosh maharshi writes "On social networks like Facebook, even if you have kept your profile very private, people can just look at your friends list and infer lots of vital information about you. Most of the social networks like Facebook and LinkedIn allow people to see your picture and your friends list as part of the open access for visitors (the article says that only 5% of Facebook users have bothered to hide their friends list). In a study titled You Are Who You Know: Inferring User Profiles in Online Social Networks (PDF), conducted by Alan Mislove of Northeastern University and his colleagues at the Max Planck Institute for Software Systems, an algorithm was tested that can accurately infer the personal attributes of Facebook users simply by looking at their friend lists. 'At Rice [University], the algorithm accurately predicted the correct dormitory, graduation year, and area of study for the many of the students. In fact, among these undergraduates, researchers found that “with as little as 20 percent of the users providing attributes we can often infer the attributes for the remaining users with over 80 percent accuracy."'"

Unequivocal writes "Chalk another one up to Jules Verne. Physicist John Hunter is proposing a space cannon with a new design idea: it's mostly submerged. 'Many engineers have toyed with the [space cannon] concept, but nobody has came up with an actual project that may work. Hunter's idea is simple: Build a cannon near the equator, submerged in the ocean, hooked to a floating rig ... A system like this will cut launch costs from $5,000 per pound to only $250 per pound. It won't launch people into space because of the excessive acceleration, but those guys at the ISS can use it to order pizza and real ice cream.' Though it won't work on people, with launch costs that low, who cares?"

Early last week several questions were submitted to former CIA analyst Ray McGovern about the sad state of counter-terrorism in the United States, and he has answered frankly and in-depth. In addition, McGovern solicited former FBI attorney/special agent Coleen Rowley to review his answers and provide her own comments. Ray's biggest tip to the intelligence community was to "HOLD ACCOUNTABLE THOSE RESPONSIBLE. More 'reform' is the last thing we need. Sorry, but we DO have to look back. The most effective step would be to release the CIA Inspector General report on intelligence community performance prior to 9/11. That investigation was run by, and its report was prepared by an honest man, it turns out. It was immediately suppressed by then-Acting DCI John McLaughlin — another Tenet clone — and McLaughin's successors as director, Porter Goss, Michael Hayden, and now Leon Panetta."