Facebook, At 400 Million Users, Marks Its 6th Year

From San Francisco Chronicle:

On the sixth anniversary of the day Facebook was launched from a Harvard University dorm room, co-founder Mark Zuckerberg announced the social-networking firm had 400 million active members around the globe.

And Facebook celebrated both milestones Thursday night with a party at the company's Palo Alto headquarters and by rolling out yet another set of changes for its members' pages as a present.

Facebook has expanded dramatically in the past year. Just one year ago this month, there were only 175 million active members.

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