Several more states have a so called "Amazon tax" in the works including Virginia, Mississippi, Vermont and New Mexico. If I were located in these states, I'd seriously curtail further expansion of any Amazon agenda.
A bill has been re-introduced in California after the Governator vetoed an earlier bill. Although I haven't studied it, the new one seem to have some exemptions that might apply to smaller affiliates. Since I no longer live in California, I'm still a go with Amazon. In fact, the eBay program is such a PITA, that I'm switching a lot of my eBay stuff over to Amazon.
Diversification is my mantra in the affiliate game.