.Internet Slang

[Über] German for "super" or "hyper"; often used in video games to describe someone's talent at the game. As in: "I'm an Über player". Also seen written as "[Uber]", "[Üb3r]" and "[Ül33R]"

[Übern00b] (from German 'Über', super-/hyper- and a corruption of newb) "Fat newbie"

[-x0r] A suffix used by H4X0Rs to emphasize a point.

[0day] Software or media that is illegally obtained before or on the day of the official release.

[ACK] "acknowledged"; used frequently in discussion boards, tech-speak

[AFAIC] "as far as I'm concerned", or "as far as I care", or "as far as I can..."

[AFAICS] "as far as I can see"

[AFAICT] "as far as I can tell"

[AFAIK] "as far as I know"

[AFAIR] "as far as I recall", or "as far as I remember"