At the MySQL Conference & Expo 2009, I did a presentation "Mastering the Art of Indexing" , and now you can get the slides from MySQL Conference site .
I was excited that so many people attended to my session. I hope the session will help you to improve indexing techniques. Feedbacks are welcome.
I was asked from some people at the conference where my blog is. I am mostly publishing MySQL technical information in Japanese, but now I believe it's a good time to start publishing in English. I plan to post mainly benchmarking & performance analysis, high availability solutions, internationalization (which sometimes people have problems), etc.