So, this is very strange, but amazon.com has a new search engine called a9 (www.a9.com). I used it the other day, just to check it out, and today when I went to amazon.com I saw this link in the header with "Pi / 2 %" in it. Clicking on it (out of mathematical curiosity about what Pi had to do with Amazon.) I got a pop up window that explained essentially, since I had used a9 I would get Pi / 2 % off anything I buy at amazon. To maintain that discount, I just have to periodically use a9. Now, it's only 1.57%, but it's still a discount. Thought I'd share. Oh, and I'm pretty much positive you have to enable cookies in order for amazon to know you were there.

thanks for the tip. I don't order form Amazon very often, but now I've got a pi/2 discount, as well.