Sadly, unless you own a PC, there are NO good file sharing programs.

This is it... Limewire, and the ever useless "should be gone but isn't" Hotline.
Every other program for mac is usually a clone of Gnutella or Hotline, and is even more pointless to download than the originals. I've tried just about every single file sharing app that exists for mac, and all of them are disapointing teases. All of the good apps are on Windows. Hate to be a downer, but it's the truth. If you think about it, there really isn't such a thing as a mac file sharing program, just programs made to waste time.

It would really be a miracle if someone made a file sharing app for mac, that actually was fun... and WORKED!!!

Bill Gates + Windows users = NO FUN FOR MAC!