Call me slow but I just learned today that Amazon had, for a while now, quietly removed Kindle books as part of the things sold that are eligible for commissions to its affiliates. You can check out the affiliate general discussion forum if you are an affiliate - folks are talking about it. I've already removed the link to their Kindle stuff at the Amazon Astore thingy of mine. My Web connection is still on the slow and unstable side (don't get me started about that), so I guess I can only add "change all the links to Amazon Kindle books on website" to my to-do list once my Web connection is back to normal.
Amazon isn't coming out with reasons as to why they are not allowing affiliates to get a small share of the Kindle pie, but rumor has it that this is because they are actually making a loss on each Kindle book sold to customers. Is this even possible? I can't imagine anyone actually running a business on a loss, but then again, we are talking about the Web here, heh.
A more believable possible reason, to me, is that Amazon has decided that Kindle is popular enough and therefore they don't need crummy affiliates to take away their share of the moolah.
But that's all guesses and hearsay anyway.