I love each and every one of you. But I already have two hundred facebook friends, thanks to various high schools, colleges, graduate schools, jobs, and urban social networks. I reserve friending people on facebook for those I actually know in real life; otherwise, my feed gets overwhelmed with the lives of people I've never met. If I haven't responded to your facebook friend request, that's why--it's not you, it's me.
This article available online at:
http://www.theatlantic.com/business/archive/2008/04/monthly-facebook-notice/3245/