If you happen to read this and want a gmail account let me know. I have a few invites that I would be glad to give away. You can't beat all of that extra storage space.
Another great way to receive a gmail invite is thought this site:
GmailSwap.com
You arrange to trade something for access to an account. However, don't go there with codes expecting to make it rich. It appears that most of the people with accounts are simply giving them away.