If it's worth saying, but not worth its own post (even in Discussion), then it goes here.
Notes for future OT posters:
1. Please add the 'open_thread' tag.
2. Check if there is an active Open Thread before posting a new one. (Immediately before; refresh the list-of-threads page before posting.)
3. Open Threads should be posted in Discussion, and not Main.
4. Open Threads should start on Monday, and end on Sunday.
I think he has two strategies. One, post obnoxious prejudiced trollery as often as possible, because that always convinces people. Two, mass-downvote people you take to be your ideological opponents, because that will definitely make them go away or get ignored, rather than getting you banned and universally scorned.
(I do actually quite like karma. But I observe that posting comments is net-karma-positive for me despite Eugine's asshattery, so the effect of reducing my karma is to make me post more. But maybe all Eugine cares about is seeing "-1"s next to comments expressing opinions he doesn't like.)
He also posts a lot in Rationality Quotes to farm karma (which he needs to downvote others).