Someone who's play Counter-Strike and/or use any form of internet lingo.
ie. 'pwn', '1337' etc.
An internet junkie is someone who spends the same amount of time on the internet as these people, but instead use good things: urbandictionary, erowid, pillreports and talk to friends.
A variation is the 'internet slut'.
A social inadequate person who tries to get his point across on the internet because they can't do it in real life. Generally rubs his bishop over linux searching for open ports on other peoples computers. They have many many online friends all over the world. More than likely a moderator of a forum or game server. Conspiracies are a must!
Meat is Murder: What cha up to tonight bro?
Morbid: Gonna get me sum nosebag then pown all on WOW, then I'm gonna argue on the forum! Watch me show those losers who's daddy and smart!
Meat is Murder: Cripes! You be powning tonight then hommie!
Morbid: You betcha, behold my geeky skillz homeboy!
Meat is Murder: Same time and thing tomorrow squire?
Morbid: Damn straight! You know it dawg. I'll get my point across one of these years.
Meat is Murder: You be big boy of the internet my gangsta. Go pown dose internet nerds!