Hate to say it but I think the lack of privacy is a big part of what makes social networks sticky in the first place. Facebook noticed that I went to a restaura

Hate to say it but I think the lack of privacy is a big part of what makes social networks sticky in the first place. Facebook noticed that I went to a restaurant and now it suggests other similar places; uses social graphs to suggest new friends; tracks my clicks to give me a more engaging feed... MySpace died because they weren't evil enough.