6. The method of claim 1 , wherein the first group of user profiles includes profiles of users selected from the social network users based on a calculated probability that each social network user will respond to an invitation.
6. The method of claim 1 , wherein the first group of user profiles includes profiles of users selected from the social network users based on a calculated probability that each social network user will respond to an invitation. 9. The method of claim 6 , wherein the second group of user profiles includes profiles of users selected from the social network users based on a calculated probability that each social network user will respond to the invitation.