A
newsgroup for discussing about a
computer game called
Nethack.
It's a quite nice place, actually - lots of silly TLAs though, but once you get to know the jargon (hint: http://www.nethack.de/ helps a lot), you'll probably feel that it's a nice group to be in.
Infortunately, 31337 d00dz think this group has something to do with "net hacking" (some think that maybe it is "rogueish hAx0ring of networked games"). It is not. RGRNCA handles those twerps with extreme prejudice.