Facebook CEO Mark Zuckerberg at Facebook headquarters in Palo Alto, Calif., on Oct. 5. Facebook said it was working to fix the privacy problem reported by The Wall Street Journal. Paul Sakuma/AP hide caption

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Google has erected a new interactive billboard in New York's Times Square as part of "Watch This Space," the company's campaign to promote its lesser-known display advertisement services. via Google hide caption

itoggle caption via Google

Justin Timberlake and Jesse Eisenberg star as Sean Parker and Mark Zuckerberg in The Social Network. Merrick Morton/Columbia Pictures hide caption

itoggle caption Merrick Morton/Columbia Pictures

Google has created a new priority inbox system for its Gmail service. The new system sorts through your messages and puts the important ones in a separate box called Important. hide caption

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Philip Rosedale created the virtual world of "Second Life" based on the "Metaverse" of Neal Stephenson's science fiction novel Snow Crash. AFP/AFP hide caption

itoggle caption AFP/AFP