I'm kind of similar in real life, but on the internet I take a little more time to think about what I'm saying before i post it. Not that I don't think about what I'm saying in real life, but for those occasions when I'm writing paragraphs to people and stuff, I have the advantage on here of thinking what I'm saying over, to make my point better.
Now that I think about it...I don't act too much different IRL, although I definitely use less profanity.