"Do you ever wonder where that paper money in your pocket has been, or where it will go next? This is the place to find out.
All you need to do is enter the denomination, series, and serial number of any US dollar bill, and your current USA ZIP or Canadian Post Code in the box below.
If you are from Canada, be sure to check
out Where's Willy? to track your Canadian Currency!"
I've gotten 2 "hits" so far.