MUSH stands for Multi-User Shared Hallucination, which is a form of MUD (Multi-User Dungeon or Dimension).
This is a text-based interface accessible via telnet or via various MUSH clients, which allows a number of people to interact in virtual "rooms" and through a coded game/stat system.
In other words, we're an online, text-based D&D game, but set in LA with Vampires. Or, if you prefer, we are a series of chat rooms with role-play going on and a strict setting and theme. MUSHing as it is implemented in our game enables players to "write" a character, and play out that character's life in our designated setting.
Distinctions are drawn between IC (in-character) and OOC (out of character) interactions. Role-play allows you to further your character's IC goals, but more gratifyingly for most, allows you to tell a really good overall story in cooperation with other players and staff.
Thus, MUSHing is a mixture of game-playing, story-telling, and improvisational theater all rolled into one.
Logging into and playing at our MUSH is free.