Amazon.com will "share the pi" with you. Actually it's a pi/2 or roughly 1.57% discount on items you order from Amazon. You become eligible by using the A9.com search engine for a few days.
Sidenote - In case you didn't know, you can use Google search as a calculator by entering 2+2, 4/2, 2*2 or other numbers of your choice...like pi/2.
A9 has a calculator feature as well, it's just that most of us (for now) have the Google search bar embedded in our I.E. or Firefox toolbars, making Google more convenient.
