Basically, any kind of "1337" or texting lingo. A sprinkling of 1337 is fine if it is used for emphasis or sarcasm, but not in normal posting. Texting crap does not be.long on a forum AT ALL.
As a side note, using no punctuation or capitalization is a real pain to read so is poor spelling thats why there are builtin spell checkers in every browser or at least one or twelve that are easily installed no use in subjecting people to your own ignorance i know not everyone who spells bad is dumb but it comes across that way at times but it is so easily avoidable and all so there is really no excuse for it ya know
Next?