ZOT:
v. to strike or destroy, especially with lightning or other beam or jolt of energy; in slang usage on the Internet, to remove, censor, or ban material or participants.
See also: Behind the Scenes of a ZOT!
It's generally acknowledged that the name "zot" comes from Johnny Hart's comic strip "B.C.":
I know somewhere on this site there's a glossary- guess I'll have to check it out again!