Just added a link to an Amazon ebook to a post and the automatic addition of the MR tag as the source for a click through works just fine.

Clear back in the late latter part of the 1990s I put a lot of effort into creating a personal web site. One aspect of that was writing extensive reviews of books that I really liked and at the end including a link to the book at Amazon with my web site identified as the click through source. I actually did pretty well by it at the time, I was able to buy a book every one to two months based on credits received. This was before ebooks. Of course the person clicking through had to make the purchase then. Not go back and search Amazon for the book. Great idea for MR. I'm sure every little bit helps.

I was going to make some comments about content allowed in MR Library, but being opposed to any censorship at all (other than the legally required copyright issues) maybe I'm better off not raising the questions.