DANG IT! i had this same idea months ago, but had no way to implement it. well done.
We had the same problem. Had the idea for a few months and finally figured out how to do it. Its live if you hadnt heard! Order away!
Any requests are welcomed!
http://pizzaforcoins.com
In case you missed it, your pizza site got mention on page 1 of "Money and Investing" section of the Wall Street Journal today. Article is on "Web Money Gets Lsaundering Rules", but your site got a call out. Nice!