Shareaza is very, very nice. It must be the only Windows client that actually implemented most of the proposals, and does it so well Well done guys!

One thing, on my WindowsXP system, it freezes up for a few minutes when you start it up. Not sure what's causing it, but you might want to look into that.

Also, have you considered opening a Shareaza client forum at Gnutellaforums? Looks like you have many fans already that'd like to have a forum specificaly for your client.