[Improve skill] How to read faster

How many wpm (words per minute) do you read? I am not sure about me, but I'm very slow to read.
I am stupid guy but I cannot concentrate when I am reading, I always think and imagine. So, now the solution is find and study a good method for reading faster.
I always start with Google, and here is some links I feel it's good.

http://www.fourhourworkweek.com/blog/2009/07/30/speed-reading-and-accelerated-learning/
http://www.wikihow.com/Read-Fast
http://latimesblogs.latimes.com/jacketcopy/2009/01/how-to-read-462.html

Try to study with me, and share you experience :)