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.
Discussions of general cognitive enhancing tools such as Adderall and N-Back.
I'd like to see more discussion of n-back too, but I'm not sure there is anything to discuss. There's only so much research on it and I think I've covered most of the anecdotal material as well in my DNB FAQ.