A place to discuss potentially promising methods of intelligence amplification in the broad sense of general methods, tools, diets, regimens, or substances that boost cognition (memory, creativity, focus, etc.): anything from SuperMemo to Piracetam to regular exercise to eating lots of animal fat to binaural beats, whether it works or not. Where's the highest expected value? What's easiest to make part of your daily routine? Hopefully discussion here will lead to concise top level posts describing what works for a more self-improvement-savvy Less Wrong.
Lists of potential interventions are great, but even better would be a thorough analysis of a single intervention: costs, benefits, ease, et cetera. This way the comment threads will be more structured and organized. Less Wrong is pretty confused about IA, so even if you're not an expert, a quick analysis or link to a metastudy about e.g. exercise could be very helpful.
Added: Adam Atlas is now hosting an IA wiki: BetterBrains! Bookmark it, add to it, make it awesome.
Another thing that should be taken into account -- though, as far as I know, it's not discussed explicitly by any serious research into the subject -- is that with many people who drink, being a total abstainer can be a great obstacle to building trust .
From what I've observed, drinkers are apt to be prejudiced against abstainers in social situations, treating them as prissy and judgmental types in front of whom one should be extremely cautious before divulging any potentially compromising opinions and information. I myself usually have this attitude when I first meet people in parties and similar places, and I think it is on the whole a useful heuristic, though I will quickly override it as soon as I get more information about the person. (There are several people who are abstainers and nevertheless enjoy the highest level of trust from me.) I obviously have no systematic data, but it does seem like lots of people employ the same heuristic, though many would never admit it explicitly.
Excellent point: I know I tend to feel the same way about vegans (I eat dairy+meat) initially.