The Harvard drop-out, who took the stage with newly recruited COO Sheryl Sandberg, finally admitted that Beacon, Facebook's widely critized advertising initiative, was a "big mistake"—perhaps the bluntest admission of guilt regarding the service's failure he's issued to date. (His previous apology was tepid at best.)

He also re-iterated that he has no desire to sell the company to Microsoft or Google, but did acknowledge that he regularly talks to Google co-founder Larry Page and CEO Eric Schmidt. Why, they're so buddy-buddy, Zuck recently had the boys over his apartment: "Page got one of the two chairs and Schmidt would up on the floor." (Emphasis ours.) Zuck told 60 Minutes back in November that he lived in a "one-bedroom apartment with a mattress on the floor," but we figured he'd have upgraded his digs by now. A piece of advice: If you're really trying to use Facebook to get you laid, we hear a couch and a bed pay big dividends!

As for COO Sandberg, we hear her efforts to corporatize the company's Palo Alto and Manhattan offices aren't going over so well with some employees. (Zuckerberg recruited her from Google back in March in part to help give Facebook a more grown-up feel.) A source tells Radar that some underlings have taken to referring to Sandberg as the "Fun Nazi" after she ordered Facebook to pull out of a scheduled beer-pong game with CollegeHumor two weeks ago.

It appears CollegeHumor was eventually able to find a suitable drinking opponent, though. Co-founder Ricky Van Veen blogs that his bros were beating up on Gawker on Wednesday 10 to 2 before "we ran out of beer."

Um, ran out of beer? We might never be able to take CollegeHumor seriously again.