SIWOTI
Acronym for "someone is wrong on the internet." Describes the compulsion to post rebuttals to online nonsense, in the vain hope that it will somehow set the record straight.
I try to stay away from Dinesh D'Souza's ravings, but when you've got SIWOTI syndrome, the man is like a magnet of wrong. (PZ Myers, 3/April/2008)