That was funny. I can't say I've really been in a position to tell someone that I don't want to be friends any longer. I usually just ignore people I don't like and it all kind of works out. A girl I dated in my pre-facebook college days lived with three other girls in a house together. They were all buddies, but there was one girl the others really disliked without her ever being aware of how they felt. When the group graduated and moved on to jobs in cities, they all maintained steady friendships. For the one girl though, contact became all one sided. She would call and visit and try to hangout. The others would oblige with mild hesitation and without any emotional reciprocation. Finally, they had had enough and decided to collectively write her a letter stating that they, all three, were no longer interested in maintaining a friendship. That was that.

On a side note: I can imagine if I were still in grade school how important my facebook status and friend count would probably be to me. Fortunately, I'm in my thirties and don't put that much stock into any of it. People can unfriend me all day long and I wouldn't bat an eye. I also do friend randoms from the past, but will not hesitate to delete someone's feed if they're buggin. I basically use my FB account as a kind of phone book. I can get in touch with people if need be, but it isn't an end to my social activity, just another means.