This image was lost some time after publication.

In a Wall Street Journal story on that quirky lil' Facebook founder (OMG he wears sandals! OMG he turns his phone off when he's with his girlfriend!), Mark Zuckerberg lets it drop that he often gets a full night's sleep.

During one series of talks with Microsoft, Facebook executives told their Microsoft peers they couldn't do an 8 a.m. conference call because the company's 22-year-old founder and chief executive, Harvard dropout Mark Zuckerberg, wouldn't be awake, says a person familiar with the talks. Microsoft executives were incredulous.

In an interview, Mr. Zuckerberg declines to comment on any talks. The young entrepreneur says he generally works late — he recalls eating French fries recently in the parking lot of a local McDonald's restaurant at 3 a.m. — and doesn't get to work early. "I'm in the office at 10:30 a.m. sometimes," he says.

Slacker. Factoring in that everyone picks their most extreme records when talking to media, the "3 a.m." story means Mark's average bedtime is really 2 a.m. To his credit, he's probably in the office at 10. Still, that could make a solid seven hours of sleep. Google super-VP Marissa Mayer reports somewhere between four and five hours a night. And she's already 31 — that's over 40 in dot-com years.

Facebook, Riding a Web Trend, Flirts With a Big-Money Deal [Wall Street Journal]
Earlier: "Her?": Journal says Yahoo is looking to buy Facebook — for a billion dollars [Valleywag]
Photo from The Student Life []