Direct advice for young (= precollege) people. They have pretty much their whole life ahead of them, and if you can get to them and give them advice before they start down some potentially limiting major life path/choice then its a huge gain. I personally want a bit of help with this...
You could do something yourself, but if you get 2 people to do that same thing then you effectively dedicate 2 more lifetimes to the effort. And doing so doesn't even eat up that much of your own time.
Also, post college people. I graduated from a university a year ago, and just found myself with a lot of free time to try something. It would be nice to have some help, advice, ideas, etc. This would probably need a separate venue though, aside from lesswrong posts or discussions.
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.