Are there any areas of study that you feel are underrepresented here, and would be interesting and useful to lesswrongers?
I feel some topics are getting old (Omega, drama about moderation policy, a newcomer telling us our lack of admiration for his ideas is proof of groupthink, Friendly AI, Cryonics, Epistemic vs. Instrumental Rationality, lamenting how we're a bunch of self-centered nerds, etc. ...), and with a bit of luck, we might have some lurkers that are knowledgeable about interesting areas, and didn't think they could contribute.
Please stick to one topic per comment, so that highly-upvoted topics stand out more clearly.
I'd like to see more posts about emotion. Feelings influence decisions and beliefs quite strongly, yet there's very little on this site (that I've seen) that deals with this topic. Exceptions include posts on misguided [compassion] (http://lesswrong.com/lw/6z/purchase_fuzzies_and_utilons_separately/).
Depression, anger, lust, and, of course, happiness, can all lead people astray; under their influence, people often make poor decisions (i.e. ones that harm their own futures or harm others).
Naturally, emotions can also be a force for good. Nevertheless, the relationship between rationality and emotion is complex, and I'd like to know more.