I don't think it such a big deal at all , as long as you can use PPC to your site and put your amazon widget there...You can still make money.... I considered it is OK for this policy.....
I'm curious - any other associates receive this e-mail even though you've never done direct PPC to Amazon aff links?
i agree, i actually like it since it might get rid of some competition. The harder they make it to earn the less competition there is.