In the Foucault Reader, Michel Foucault claims his greatest trick is an old one called hypomnemata. The last time I googled on hypomnemata, all the top hits were explicit Foucault references.
The hypomnema or hypomnemata are similar to diaries (or weblogs even), except they are not written one time and maybe never looked at again. They are to be reread and rewritten over and over for the writer's education and work and progress. I have been doing a bunch of this for years and it is only since November of 2008 that I have established a system that I am confident of using daily and feel that the pages will continue to contain useful information for years. Every page is dated and numbered. I now have close to 1900 pages with this dating/numbering scheme. Foucault claims this is a great idea and I don't know about that, but so far I like it just fine. It does keep ideas that I like to think about from sinking too far down the stack through neglect into oblivion.
After five years it is reviewed one last time and then tossed into the dumpster.
I don't know about tossing into the dumpster. It seems that one interested in cryonics could get more mileage out of this by doubling this as part of that really long letter that partially amnesiac you could read after revival or that omega could use to reconstruct a approximation of you. Perhaps locking it away where you can't read it?
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.