The book I'll be contributing to is called "Mind Performance Hacks: Tips and Tricks for Becoming a Better Thinker". It has chapters on memory, math, creativity, clarity, decision making, info processing, communication, mental fitness, and "metaprogramming". My chapters fall under math and communication, but I'll leave the specifics for a later date. I think it has the potential to do very well; I find this sort of thing discussed a lot out on the web, and an earlier O'Reilly book on a similar subject was quite popular. I've seen the proofs, and there's some choice stuff in there. Due out in January. Exciting!

It's already listed on Amazon, Powell's, and Barnes and Noble (under the wrong title).