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.
I recommend O'Reilly's Mind Performance Hacks and the accompanying Mentat Wiki. I was particularly interested in the exoself which is really just a combination of the Hipster PDA and a Motivaider.
Also, touchtyping is the closest thing to a Direct Neural Interface you can get today. If you don't know how to do it, learn!
Definitely if you program, and quite possibly if you don't, using a 'real' editor like vim, or emacs, is almost as much of an increase in productivity over something like textpad as touch-typing is over hunt-and-peck.
That sentence was awkward...
Using vim fluently : Textpad :: touch-typing : hunt-and-peck.