Dustin Moskovitz

Facebook was founded on February 4, 2004. On February 5, we were feeling pretty confident, even from observing the first few hours of usage. Students used it like crazy. They'd sign up then spend the next 3-4 hours on it. Then we'd go to lecture hall and see it on every computer screen there.

When we founded Facebook, we put a lot of hours into it and worked hard every day. 'The Social Network' painted this picture that we were partying all the time, when really we only attended 2 or 3 parties during Facebook's first year.

The first time I looked at Yammer, I thought I was on Facebook. Work is not a social network, with serendipitous communications and photo collections. Work is about managing tasks and responding to things quickly.