IconBuffet
IconBuffet is pretty much what it sounds like, a site to get icons. They obviously cost money, but what’s cool about IconBuffet however, is that you can sign up for a free delivery of a set of icons once a month. Once you have one or more sets available to you, you can send them to your friends.
Currently, I have the Shanghai Tech and Shanghai Smilies icon sets. If anyone’s a member and would like to trade, let me know! There’s a couple of other sets there that I’d like to have. I’m an icon junkie (which is so easy to become when you own a Mac), and want to have as many as possible.