I didn't want to unfriend all them, because if I'm travelling or looking for a job it will be nice to have an easy list of contacts to shoot a message to. For instance, last year I happened to be at a Spring Training game and got a message from a friend I hadn't talked to in 10+ years asking if there was any chance I was at the game (I live in AZ, so I go to a lot of games). It was awesome to run over and chat with her family and catch up.