Re: What do you do with all the flies?
I go through flies at pretty good clip. Even at that though, I still tie more than I use. The ones I don't are always for some other place. Like Tarpon flies, or Steelhead flies. At some point I get around to using them. Plus tying different styles let's you learn things and just makes you a better tyer.
Then there is the give away thing. McNerney's thing, friends, fly swaps on here etc. It's not hard to find a place to send them.