Today in Tech: News around the Web

Every day, the Fortune staff spends hours poring over tech stories, posts, and reviews from all over the Web to keep tabs on the companies that matter. We've assembled the day's most newsworthy bits below.

• Outgoing Microsoft chief software architect Ray Ozzie, who joined the company in 2005 when his company Groove was acquired, sent out his farewell memo yesterday. "It's important that all of us do precisely what our competitors and customers will ultimately do: close our eyes and form a realistic picture of what a post-PC world might actually look like," he wrote. (Ray Ozzie's blog)
• Digg is laying off 25 of its 67 employees, and to top that off, Chief Revenue Officer Chas Edwards and Chief Financial Officer John Moffett are leaving the company as well. (Pulse 2)
• Some of the companies who've expressed interest in dearly-departed Digg-ers include Twitter, Groupon, GDGT, IGN, several First Round Capital portfolio companies and AT&T Interactive. (TechCrunch)
• In case you were curious, Windows (still) rules supreme with a healthy 91.08% chunk of the overall OS pie. (Fortune Tech)

• Social gaming developer Zynga has surpassed Electronic Arts in value: $5.51 billion compared to the latter's $5.16 billion. (Bloomberg)
• The Logitech Revue camera reviewed. (Fortune Tech)
• Security alert! A loophole in the iPhone 4 software lets users make calls directly from the lock screen. (9 to 5 Mac)
• Philip Elmer-DeWitt makes a compelling argument for why Apple won't buy Facebook despite the recent news that Steve Jobs and Mark Zuckerberg dined together. (Fortune Tech)
• Comcast is taking its Xfinity TV out of beta, opening access to more than 150,000 hours worth of online content and letting users access it regardless of which Internet Service Provider they use. (paidContent)
• After initially reporting the somewhat dubious claim that one-third of all iPad users have never downloaded an app, The Nielsen Company now says the number of "download virgins" is fewer than 1 in 10. (The Register)
• RIM's PlayBook caught in action.Will you be buying one next year?

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