brave new marketing

i saw this ad on amazon.com (and i had recently read about their new search engine, a9 ...:

A9 Instant Reward — Save 1.57% On Virtually Everything at Amazon.com

More Details about the A9 Instant Reward :
You can save an additional 1.57% (π/2%) on virtually all your purchases at Amazon.com by simply becoming a regular user of our new search engine at A9.com. Once you use A9.com for a few days you will automatically be eligible for the A9 Instant Reward. (see below for more details) Just make sure that you are recognized by name when you use A9.com, and your Instant Reward will be applied automatically at checkout.

what an ingenious cross-marketing tie-in ... and what a scary database of information this corporation would have on your habits !:

Based on your recent searches, Amazon.com recommends: Fight Club