Words like pwn and w00t are so obviously hacking related that its hard to understand why gamers would rationalize that they have something to do with quake. However, it is really interesting that these words have been appropriated by that scene and become extremely mainstream. When I saw Cartman say pwn on national television a few months ago I almost jumped out of my seat. I don't really know who invented the term, but that person is likely only one degree of separation from the folks who hang out at summercon.
I love that South Park episode. Best one ever.
What does pwn anyway? I've never understood that one. I had to have someone explain FTW recently. It still didn't make any sense to me.
Disclaimer: I have been "on-line" since 1983, so go easy on me hahaha... I just really don't get a lot of the lingo sometimes.