i dont know which "Lol" you mean....
i use "lol" meaning "laughing out loud"
and "LOL" meaning "Lots of Love."
it's different whoever you chat with of course..
laugh variations that i know:
LMAO
lol (and looooooooooool for laughing a lot)
LMMFWAO
Ha Ha
He he
Ja Ja (for those...