Happy Bubbles

Curses!

I recently found a cache despite some incorrect coordinates, and a couple of other people commented on that in their logs. The problem is, I'm female and they both referred to me as a guy. It bothers me a little bit. What should I do?

Someone mentioned leaving wheresgeorge bills in caches. Doesn't that kind of defeat the purpose of wheresgeorge? I thought that the point was to track bills in normal circulation, and that you're not supposed to do anything special with them.

Do you have to trade up/even if there's an exceptionally good item? I read a description of a cache where they left $100 as a bonus for the first to find. Also, can you leave several low quality things in exchange for a medium quality item?