I have found a site where you can win a GMail invitation and get an Orkut Invitation (title is link).
Ok, giving away Gmail invitations is no bad, even I do it.
But since Orkut is a network of friends, I think this invitations for everyone spoils the meaining of the trusted friends network – I e.g. would never invite a person I don’t see as a friend.
Just my opinion, well…
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