Not that it helps you now, but I use sneakemail.com a lot. You can get new random email addresses with no limit that they'll forward to you. The idea is that you get a new address for each untrusted correspondence. If you start getting spam through that address, you can see what address it came from and yell at the person to whom you gave the address. You can also cancel it.

The best part is that you don't have to pay for it. If you feel like it, they have a fairly small amount you can pay that will increase the amount of traffic you can use and the size of individual emails.

It's really nice.