Good source for horse books

I'm not sure I'm posting this in the right place, but I came across this website that lists (and ranks!!) horse books, and thought some of you might find it useful:

Wow this site is really helpful. Its been so hard to find good horse books lately!

I thought so too, Ponypwnage! Especially since most horse books are written for kids, and this site caters to grown-ups :)