I have nothing to do with the book bomb site but you should always use the affiliate link of your favorite small website when buying from Amazon. It helps the site you like and it doesn't hurt the author/publisher at all. Not going through an affiliate just means more money for Amazon when you could be supporting a site you frequent (this is true even if the site has nothing to do with what you're buying - just click on a affiliate link and then buy whatever you were planning on buying)
brunner - this is obviously up to you but you may be able to quiet some people down if you published how much you've made via the links so far, and how much of that you were planning on contributing to Dr. Paul.
I haven't made a penny. You don't get paid for pre-orders until the book ships.