The price of free e-mail

[Link via Kottke] Gmail swap allows those desperate for a Gmail account to post offers to those who have accounts and can invite a few others into the club. Someone actually offered a one week Maui beach house rental for an account. Hot damn.
As you'd expect, many of the offers are bizarre. You can also buy one off of eBay. The going price seems to be about $20.
I have a Gmail account (eugenewei @). I don't use it much, but I do have two invites to give out. I wonder if Google will let me swap them for one share each in the IPO.