I agree with you that the purpose of the site is to track natural flow of banknotes, but I don't see any glaring problem with a fun 'team-building' activity such as this. It's not a method to harvest hits or underhandedly increase the CMT score of those partaking.

I think it's fun to get snail mail, especially when it's relevant to a hobby that other like-minded people are taking part in as well! I think it would be pretty neat to have a bill that traveled elusively between CMT members! The hit map would be like a web of trackers across Canada.

If it's ultimately deemed against the rules, though, then I'll have no problem conceding I suppose. However, I really don't see the harm in having a bit of money-tracking fun.