http://machinist.salon.com/blog/2008/08/07/facebook/index.html
On this website a teacher starts to talk about why he thinks facebook is addicting, he talks about the the different up dates . I think he was saying that it can be addicting because it keeps people intoned and let others no whats going on. He was saying people use face book so other people can find out what they are doing when they aren't around each other. with out the updates it wouldn't be every addicting .