This article talks about memory competitions and the techniques the high-level competitors use. It also discusses the differences between speed-typists and normal typists, which are like the differences between amateur musicians and professionals.
http://www.nytimes.com/interactive/2011/02/20/magazine/mind-secrets.html
When it mentioned Dr. Yip Swee Chooi, who has memorized the complete Oxford Advanced Chinese-English dictionary, I had to look him up. This video (probably not available in China, but you can try searching for him by name) is pretty entertaining, and at the end he explains his technique, which is related to the classical Roman Room technique.
http://www.youtube.com/watch?v=PDcVKtyryPw
I also can't help but point out that all that work with the dictionary doesn't seem to have helped his accent much. I wonder if Skritter users might tend to have the same problem in Chinese.
James