I voted no. It's nice advertisement, but if you print the url on all your notes, it makes the hit a bit less real, doesn't it ?Flip the Coin wrote: As an experiment I stamped a few 5 euro bills with the eurobilltracker url and now I wait and see if these bills have a greater chanche to be entered.
Flip the Coin
A small percentage as advertisement however, seems ok.
What if there is decided once that all bills who carry information with them are kept out of circulation ?

