Pooga
I mentioned this a loooong time ago, but I had hoped that others would do it as well.
When I get a hit, and the person has left anonymous email turned on, I send them the following message of thanks:
Thanks for recently entering that marked bill and giving me a hit!
It also increases Saskatchewan's lead in the stats.
I hope that you will return to the site often and enter all the bills that come into your possession!
Pooga</em>
Of course, if they don't live in Saskatchewan, I delete the 2nd line!