mostly cuz I want some friends to invite and I feel bad rejecting them. I accept all requests unless I saw something bad on their profile/about me
because its rude to reject people who want to be your friend and also i like being popular :p
I don't care much for their username or picture, I add almost everyone my eye lands on and plus I can never reject.
I read the about me's before accepting. I almost always accept but I find the about me's kinda interestin
Because I rather enjoy knowing that people might read my invites even though I dont always read theirs. Either that or I like their Profile.