Why do some of my friends act childish on facebook?

[Neontrees10]

They starts fights. I had many arguments with friends and ex lovers all because of them being immature on facebook. They act like facebook is their whole social life. My now ex best friend. She harrassed me on facebook sending me a bunch of rude messages instead of acting like a adult and talking to me on the phone or in person. I have friends on facebook that ignore other people even if they are friends. I don't get it.

[Eric]

Facebook itself, is childish.

[luvlife]

because, simply, they aren't face-to-face. they can say whatever whenever they please cause they know that the person or people they talk about can't physically do anything.