Theyre free & sommeone already doing this - Well i can give you some if you want just give me your email I will send the invite i got 50 anyway hardly give them out
i think gmail has leagal issues and giving 50 invites to almost all the members is there way to get it out to the world
Free Gmail Inviter..... its a pinned topic.... http://www.gamerenders.com/forum/index.php?showtopic=72555