I have used about 12 profiles with about 10.000 friends in between them to start it. Its a "Lets get all FB members" tipe of group. Also i've used all the ADD ME group pages from all the Mafia / Mob war tipe of games where they post all their emails and invited them to my friends. Used the viral channels every few hours. Using a Hot girl's profile as admin - was very surprised to see over 100 friend invites in half a day. Got about 600 members in 10 hours. What would be your expectations from this group? How can i improve it?