FactQuiz: Happy Birthday, Mark Zuckerberg!

Philosophy, lifestyle and biographical facts about Mark Zuckerberg are in this quiz. Test your knowledge on one of Silicon Valley's most influential figures!

Sam Lessin, VP of product management, leaves Facebook

Lessin, who was close friends with Zuckerberg at Harvard, is leaving at the end of the month to go ‘adventuring’ for the time being.

Facebook downtime was a half million dollar glitch

$500,000 is the ad revenue that Zuckerberg and co missed out on as the site outage spread. Chump change.

Twitter lights up when Facebook goes down

It was just half an hour. That's all Facebook was down for but thank heavens for Twitter because the social media universe had a place to vent.