A9.com Help and Frequently Asked Questions. A9 just updated their site and they bagged their 1.5% off of Amazon purchases if you use it. Nice if they told someone, but I think that's part of the plan. People keep using it (the main reason I used it was for the Amazon rewards, I have to say the search quality wasn't that good, so no real loss there).
Now I can use Blingo and try to get rewards. Another example of how Web 1.0 companies with earnings (Amazon) are going to have time beating the marketing dollars of Web 2.0 companies like Blingo
