Used in place of dot dot dot which is used in place of "..."
It is used to express a fairly wide variety of reactions, such as that what it replies to is stupid, exasperating, or defeating. It is used in text conversations, such as message boards, chat rooms, IM, or Email. Using this form has gained popularity because if you line break after each you get a nice pyramidal shape, each line being longer than the one before.

When someone thinks they are the main character of their life. Usually comes with a side of individuality complex, quirky style and a self centered point of view.