received 2 downvotes. Nothing but hatred directed at the poster can explain this. These acts are immature and would impede the "graduation" of the site.
Most posters seem to be computer-geeks also and so this problem can be tackled as a computer-science problem.
(1) Discover keywords that can evoke "legitimate" hate - Siva-Vishnu being the ultimate one.
(2) discover topics that can evoke legitimate hate - like caste system, sati and so forth
(3) After filtering these reasons out - any consistent patterns of downvoting/votes to delete can only be due to ad hominem reasons.