[Richard230]

You might find this article by Bike Bandit to be mildly interesting:
http://www.bikebandit.com/blog/post/top-10-questions-about-motorcycle-brake-pads

[Richard230]

Here is another brake pad article.  This one written by Galfer, so it might be a little slanted, but I assume that they know what they are talking about.  However, the last half of the article talks about brake discs, how to clean them and how to break-in new pads, which I found interesting.  (They recommend not using brake parts cleaner to clean brake discs, as an example.)
http://www.bikebandit.com/blog/post/motorcycle-brake-pads-and-rotors-explained-by-galfer-usa