MY ONE REQUEST - Please have a profile picture
While I'm someone who thinks that some of the guys/girls on here are assholes for insisting that a person comment on their blogs, write on their walls, have movies uploaded, etc. in order to become their friend; I do agree with them that a friend must have a profile pic.
This is a social site among other things people, the faceless profile thing just won't cut it. A profile pic doesn't have to be a pic of you, it can be of someone or something you like. Whatever it is it will give the lady/fellow on the other end some sort of insight into what kind of person you are and if (s)he wants to be friends with you.