I would really like to hear more about this topic. I am actually trying something entrepreneur-ish right now (see my post on LifeTracking). I want to help people, but I also want to make money, but not in a way that also damages/hurts people. I was going to put ads in my program, but then I just couldn't bring myself to do it. I personally hate ads and I wouldn't want to push them onto anyone.
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.