1. A computer-implemented method comprising: storing a user profile for a user of a social networking system, the user having one or more connections, where each connection is another user of the social networking system with whom the user has established a relationship; receiving from the user an indication to add a connection of the user to a group of connections of the user; determining one or more common characteristics between two or more of the connections in the group; determining one or more additional connections from the one or more connections in the user profile who are not in the group to suggest based on the one or more common characteristics; and suggesting to the user to add the one or more additional connections to the group.