Which one do you respond with when you read something funny on the internet? I only use 'Haha' because if I wasn't as smart as I am now and able to differ life from net I'd probably have one of those lame convo slips where someone who consumes most of their day on the computer might say 'lol'... Plus 'Haha' is just more natural and I like to keep my net convos as natural as can be... Hahahahahahahahahaha vs. R.O.F.L. & L.M.A.O... I've never rolled on the floor laughing unless for some reason I was laying on the floor and heard an extremely funny joke while on fire... Nor have I laughed my ass off, that would be tragic cause then I'd really be full of shit... How many people write 'Haha' or 'L.O.L' just to let others know that you caught the punchline as well, even if you didn't really laugh?