ThinSkin writes "Slashdot readers may remember an article regarding ExtremeTech's Loyd Case's experiences with solar power for the home after one month of usage. During that time six months ago, it sure seemed like a great deal, but the tables have turned significantly once winter approached. While it's no surprise solar power generation is expected to dwindle during the winter, Loyd compares solar power data of the last six months to determine if solar power is still worth the time and money."

mytrip sends a reminder that starting today, visitors to the US from 35 visa-waiver countries will be required to register online with the Department of Homeland Security in advance. The DHS is asking people to go online for the ESTA program 72 hours before traveling, but they can register any amount of time ahead. Approval, once granted, is good for 2 years. DHS says that most applications are approved in 4 seconds. If an application is rejected, the traveler will have to go to a US embassy and get a visa. CNet reports that information from applications will be retained for 12 years, and eventually up to 75 years.

The Opposable Thumbs blog reports that Guitar Hero III has reached a financial milestone, becoming the first individual video game to reach $1 billion in total sales. The number is even higher if you consider the rest of the franchise. In addition to helping drive the video game industry during tough economic times (much like the Wii), it's helping other industries as well: "... aside from the fact that Guitar Hero: Aerosmith had sold three times as many copies as the band's last album during their respective first weeks, musicians whose music is featured in the game has seen a rise in music sales to the tune of 15-843 percent." And CVG notes, "... two-thirds of non-musicians exposed to music games plan to start playing a real instrument in the next couple of years." Also, Rock Band creator Harmonix may be looking into a partnership with the record labels to sell music for use outside of the games.

ruphus13 writes "Alan Cox — one of the lead Linux kernel developers at Red Hat — is leaving the company after 10 years and is heading to Intel, where he can focus on more low-level development tasks. Some are speculating whether this is indicative of a shift to a more 'application-centric' vision at Red Hat. From the article: 'Red Hat is integrating more application related, user- and enterprise-centric tools into its well-established "low-level," "core" development and support tools. It'd be more worrisome if Red Hat neglected to strike out in this direction. Cox was with Red Hat for ten years, and regardless of any suspected change of course within the company, that's a fair amount of time.'"

Zonk pointed out an interesting video presentation by Shamus Young on the importance of the new Prince of Persia, calling it the most innovative game of 2008. Young brings up the fact that many of today's games punish failure by wasting the player's time; being sent back to a check point, the beginning of a level, or sometimes even further. This cuts into the amount of time players have to enjoy the meat of the game — the current challenge they have to overcome. Unfortunately, as Young notes, modern controllers are designed for players who have been gaming since they were kids, and have evolved to be more complicated to operate than an automobile. The combination of these factors therefore limits or prevents the interest of new players; a problem Prince of Persia has addressed well through intuitive controls and the lack of punitive time sinks.