A clarification on how the swap works since I've heard there's some confusion - you have 2 pals, an upstream and a downstream. They are different people. You send to one and receive from the other.
Upstream - the person who will be sending you a package - they should have anonymously commented on your blog or sent you an email by now. She knows who you are, but you don't know who she it.
Downstream - the person you will send a package to - you should have anonymously commented on her blog or sent her an email by now. You know who she is, but she doesn't know who you are.
Let me know if I haven't made it clear and I'll have Cass come up with a better way to explain ;)