When going to pay for dinner tonight I noticed a ring around the reserve bank symbol on the dollar bill I had put down. It was a URL for wheresgeorge.com stamped on the bill for a money tracking site. I’ve seen messages on money in a much more low-tech way since I was a kid, but this was pretty funny. I entered the serial number but unfortunately somebody stamped the bill but didn’t enter the bill into the system. 
Hopefully someone else will eventually give this a try and see that I transferred planes in Salt Lake City the other day. I *think* that is where I got it. 
The really funny part of the site though is that they must sell a stamp that made the interesting mark on the bill. look on the site. Do you see it? no? Well if you dig around, you can find the fact that it is discontinued in their store. If you don’t mark the bills then what is the point. According to the FAQ we are supposed to go get our own made. This snippet from the site’s FAQ though was amusing:
#8 Is it legal to write on or mark currency?
Where’s George? does not encourage the defacement of U.S. Currency. The law defines ‘illegal’ defacement as defacement that renders bills unfit to be re-issued. For the legal details from the U.S. Bureau of Engraving and Printing, please Click Here#9 What happened to the official Where’s George? Rubber stamps?
We no longer sell any Where’s George? rubber stamps. We apologize for any inconvenience this may cause.#10 So, where can I get a rubber stamp?
We really can’t help you there. Sorry. But any local office supply store may make one for you. There are also many online custom stamp makers on the Internet.
I’m sure those questions were completely randomly ordered and have nothing to do with each other. 
I wonder how much trouble they got in.
They didn’t get into any real trouble. The gov’t just wanted them to stop selling the stamps because of a little known law that says you can’t advertise on u.s. currancy. the gov’t thought that since they sold the stamps it was kind of like advertising, but not defacement of money. in order for it to be defaced you would have to do it so much that you couldn’t tell what kind of bill it was. So as long as wheresgeorge.com no longer sells stamps, they seem to be in the free and clear.
there are hundreds of stores online where you can buy the stamps to mark the bills
Perhaps, instead of commenting on how there are “hundreds of stores online” someone should give specific links for the stores that will make them. I have gotten “no can dos” from several so far.
heres a link to a place that sells quite a few different wheresgeorge.com stamps http://www.StampsOnSale.com
The Where’s George tracking project is actually a lot of fun and it’s quite interesting to see where one’s money goes. Yes, there are many places online to find the stamps.
I have been looking to buy that stamp, how do I get one?
Just received two round stamps that actually came with a stamp template/guide for the round circle. Found it online at stamp-connection.com for $15 + $3 s&h. A good price for what I’d researched.
Don’t forget to check out Stamp-Connection for Where’s George Stamps. http://www.stamp-connection.com