This has nothing to do with HP, but what does "lol" mean?

[Minimy]

You write it all the time.... I don't understand it... ???

[Artemis Fowl]

lol = laugh out loud

[Neo]

What she said. Its internet speak. You'll see a lot of it around here.

[_Lavender_]

As those before me said, 'lol' is 'laugh out loud', as 'ya'll' is 'you all'. Interneter's have a profound reputation for being very lazy with words on occasion. Hee hee, I admit to it. ;D

lolz,
lol,
lols,
and etc. are very much the same thing. Personally, I think 'lolz' sounds more fit than just 'lol'. It's how I read it in my mind, and hence, it has come out for quite a time now. Lolz. <- See?
:-*

[Minimy]

Well... thanks for the explanation.. it helped me a lot.. :D

[Nicky Tennant]

Oh,I had problems with that too...until my friend cleared the thing up...thanks to her... ;D

[Ginny Weasly]

There are alot. We don't use them all, since we arn't as lazy here as we are when using an Instant Messanger.