I think that if twp would embrace creative commons, we could actually have a repository not only of maps, but of map sources so that if a mapper doesn't mind, then other mappers can have the source code of their map, to reuse bits a pieces here and there for example.
that would be very cool, especially for beginning mappers like me, to see as much map source as possible and that way get better at mapping faster.
there are many different kinds of creative commons licenses, from public domain practically up to all rights reserved, and then many things in between. I think all mappers ought to take a look over at http://creativecommons.org/ , and msleeper since you're working on redoing the site design, maybe now's a good time to incorporate creative commons so everybody knows what everybody wants. 
