From: Austin, TX
Taking it from the bottom...
Ain't is a contraction for: am not, are not, is not, ; have not, has not; do not, does not, did not. At least I've seen it used in all those instances. It is informal, and originated in Britain, not the US. Ain't was used in Colonial times. (1778 was when it was added to the dictionary.)
Leet Speak is no different than any other form of slang language. It the 60s the hippies had their own venacular, in the 70s -- well we ain't quite sure what they did then. The only languages that do not develop and change in word usage are dead languages (like Latin) and French where the National Language Committee convenes periodically to add "official" new words to counter phrases such as "Le disk drive." If your language is stagnant, how long before the culture follows suit.
My handle comes from some friends who gave it to me when I was street skating in Houston as a means of daily transportation. The figured the play on my last name (Dare) was quite descriptive of my attitude, personality and what it was like dealing with me. :rolleyes: (I don't get the last part, but that's what they said.)
Lastly, (or firstly in the original order) I agree that the people on this site, even when dumping on you, tend to be polite, and friendly. It makes for better discussion and info exchage. I tend to avoid forums where the people just want to flame each other and call it conversation.
Oh, and I like this new format.
War is unhealthy for die-stamped cardboard and other paper products.