For those of you who are (compulsively) buying on amazon on a regular basis, here is something you might wanna know:
…since you’ve been using A9.com recently, virtually everything at Amazon.com is automatically an additional π/2% (1.57%) off for you. Collecting this discount is zero effort on your part. It will be applied automatically at checkout (it will happen whether you use the shopping cart or our 1-Click Shopping¬Æ). You don’t need to do anything to get this discount except keep using A9.com as your regular search engine.
* Amazon.com: What is A9.com Instant Reward?
ok. 1.57 is not that much.. but still..