I can think of one: http://shopulator.me http://shopulator.me "Shopulator lets you tabulate the running total on your grocery cart by tapping your phone agains

I can think of one: http://shopulator.me http://shopulator.me "Shopulator lets you tabulate the running total on your grocery cart by tapping your phone against the product price tag as you put it in your cart. The information is stored in the "cloud" (aka the internet) so people can create grocery lists, shop collaboratively & more." disclaimer: i created shopulator.me