lol is just internet slang on the net, which I view as a country with a VERY varied population. I live in Southern California, and we say "legit" a lot, but up North, they say "hella" which really gets on my nerves, 'cause it doesn't make any sense at all. Also, British people say "bloody" a lot, while the Canadians say "eh" quite a bit. Its just another thing that develops, and becomes part of the language. (the internet language)