social networking

Search giant unveils new social-networking tool, as well as a plan to provide Internet access. Also: The birth of a gaming start-up.

The Defense Advanced Research Projects Agency likes to run contests for geeks. Previously they held a robot race in the desert.

DARPA is interested now in social networking. The agency recently held a challenge mobilizing thousands of people worldwide to find out how people gather and report information using tools like Twitter.

Dr. Peter Lee, of DARPA, talks to Ari Shapiro about the experiment.

CNET gets a sneak peek of the upcoming Twitter, Last.fm, and Facebook apps for Microsoft's game console.

The social networking Web site MySpace is cutting more than 400 positions. MySpace is making drastic moves because revenues are dropping and the site faces tough competition from Facebook.

The company says the layoffs are an effort to return MySpace to a "startup culture."

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