Facebook founder and CEO Mark Zuckerberg told NBC's "Today" the company is concentrating on "serving all the different groups that use" the service, including "every demographic in every country."
In response to a question about whether he's concerned teenagers are using Facebook less, Zuckerberg didn't directly answer the question but did say, "We're going to focus on building things that teens are going to like and we're also going to focus on building things that other folks are going to like in different countries around the world, and that's just what we need to do to serve all the people who rely on us."
The interview marked Facebook's 10th birthday. Over the last decade the website has gone from a Harvard dorm room to more than a billion active users. Here we highlight five key dates in the company's history, and look at their significance in the formation of the world's biggest social network.
February 4, 2004: Facebook launch