"User generated content sites, like Digg, are often rigged; Facebook is no longer the exclusive community for students; MySpace has become a pedophiles source for soft porn; Orkut is every spammer's favorite toy, etc. The future of the big players does not look too promising. What happens when the tide begins to turn the other way and a few of my friends begin leaving? There is a very good chance that I will too. In fact, I already have on Orkut. This is the reverse domino effect. A social network brings about a tidal wave worth of users to the site but also has the potential to take them away. If most of your friends switch to Coke, what do you end up drinking?"