A trollspotter is somebody who makes a habit of identifying trolls as they ply their loathsome trade. Trollspotters come in both good and bad flavors; some of them will wait until a troll thread is dying down and then post congratulations, while others will immediately and loudly try to rumble the troll, thereby spoiling the fun for everybody. The "good" trollspotters are easy enough to suss out, but the "bad" ones are a poser. Why? It often seems to me like they just hate to see anybody having fun. I've noticed that the "bad" trollspotters on Slashdot (on everything they seem to be quite different) tend to be hostile, uneducated, and literal-minded. The "good" trollspotters are the sort of people I'd choose to hang out with. It could be that "bad" trollspotters just miss the point of trolling entirely.