[jshintaku]

I'll take a stab at it and throw my 0.2 in I have had Facebook since 2004. Facebook became uncool when it opened up the site to people who weren't in your same college. Once everyone from Myspace and Friendster joined Facebook it became uncool. Then once people's parents and relatives joined it became seriously uncool. The lack of control over your data and pac-man like gobbling up of other companies is just the icing on the uncool cake.