On April 26th 2010 I deactivated my facebook account.
Here is my response to their "Why are you leaving?" survey:
[x] Facebook is no longer Useful for me.
"I'm no longer near my friends, so it's not useful to organize events with them anymore.
As my professional life grows, having a public photo history of my college social group is no longer an enjoyable activity.
Without the ability to seperate my professional, romantic, true-friendship (not facebook-friendship), and distant-relative groups, it's much easier to communicate with them each privately.
Facebook has become too socially and technologically public with my information."
It was a tiny ephiphany that I actually wear 4 hats in life. Facebook is seperately great for each were they to have not been intertwined, but I think the 'one-account-per-person'-ness of it was what eventually killed it for my Split-Generation-Y life. Facebook just can't handle the idea that my name should point to a different personality in each of four distinct social groups. This is why I prefer to use email addresses for online identity, not names. You get the identity of an abstract login with the automatic ability to communicate.
Very nicely put. I just find myself censoring myself so much on Facebook that it's effectively read-only to me.