Personally I'm in the never on at all group. I was interested when it was college students only but I graduated in 2002. By the time it went wide spread I mostl

Personally I'm in the never on at all group. I was interested when it was college students only but I graduated in 2002. By the time it went wide spread I mostly didn't care, and by the time it got big they started having moments like Beacon that told me no way in hell did I trust them with my personal data/social graph/etc.