Let's see... I hate it when people type in really small fonts, colors that almost match the background, colored borders around posts, terrible grammar, misuse of apostrophes, and posts that look like this:

hEy j00 liek check out theis forumm!!!!LOLOLOLOLOLOLOLOL I liek psotimg liek this becuz i theink im coo'llur than u hahahahahahahahawell I got 2 go by

....like that. And yes, I have seen posts like that, not here, but in other forums.