Facebook is getting to the level of ubiquity that is only afforded a few things in this life. It seems as if everyone is on the service to one degree or another. If someone is not on it they have heard about it and have likely gotten some ribbing about not being involved. Very few people leave (although a friend of mine recently did because he felt like he understood “how it worked” so when his kids are ready to get on it he can monitor it. I tried to explain the whole innovation and change thing but he wouldn’t hear it). Many are so entrenched that there is the idea that the service is “locked in” to the fabric of life and will continue to do so more and more.