WheresGeorge.com Is the Original Currency Tracking Project.  It's a fun, easy and free website that tracks the natural geographic circulation of American paper money and ended up creating a niche hobby too! 

Users enter the serial number from a bill into the website to see where it has been or start the record tracking its journey.

When the next person enters the bill in the website, the bill's journey is updated and everyone who entered the bill is alerted.

All users face a challenge in getting others to notice their bills. To help alert subsequent bill handlers that the bills were entered on WheresGeorge.com, many users mark them by hand with the website address and a short message. 

To help Georgers enjoy their fun, free WheresGeorge.com experience more, we created a line of attention grabbing WG stamps and unique accessories -- currency tracking made easy and exciting!