I miss the days when I could sell my GMail invites for $10 a pop. (Easy high school money!)
FYI Google Voice invites are the new Gmail invites.
hmmm I dont see an option to send out voice invites
I'm not sure exactly how, but I got two invites in the mail. I used one and gave the second away on Twitter. The other person could use the sign-up invite URL without a problem.