An RPG campaign I (Vitenka) ran. UnkownArmies?. Lasted a year, kinda evil.
And now I intend to revitalise it as an WTF campaign - /PlacesWeHold. Thoughts and suggestions (including "don't do it") welcome.
Probably never get to run it though. /SeaSlip (two) died due to lack of player time. The players still want to play in it, they just don't want to devote any time to doing so. Oh well. Maybe next (academic) year I'll go and kidnap a bunch of freshers...