I think that a tag-based comment system, where the tag weights are set by user preference, is the best. Some people might set "funny" to zero, and some might g

I think that a tag-based comment system, where the tag weights are set by user preference, is the best. Some people might set "funny" to zero, and some might give it +2. Some people could set "inflammatory" to -10, while others might want it at +1. You don't need many dimensions, and only one tristate control for each: humor/gravitas, inflammatory/huggler, informative/fluff, religious/factual, lefty/righty, vegan/meaty, etc.