I have decided that I want to give people the option to take my tags away with them if they like. But I don't want that to be it. If you offer something for free people are going to take it, whatever it is. So I know I need to do something a bit more. I have decided to make a 'sign up' sheet that people have to sign before they can take a tag. It will say something along the lines of:
These Tags are FREE for you to take, if you sign and agree to the declaration:
I think it's ok that I'll probably never know.