I thought this website was cool: www.wheresgeorge.com. It’s a dollar-bill tracking experiment in which people log on and enter the serial numbers of dollar bills they have in their posession. Then they write the website’s URL on the bill and spend it. The bill passes hands several times until someone notices the URL and logs on to enter the serial number again. You get the enjoyment of seeing where your bills have been and where they go next…pretty cool idea, I must say.