by Matthew McBride
Extranet Collaboration Manager for SharePoint 2010 (ExCM) allows you to create users in three ways:
1. Manually
2. Invitation Registration (via e-mail)
3. Anonymous Registration (potential users visit the Extranet site and click “Sign Up”)
The most common of these is via invitation. When using invitations, there is most likely an existing business relationship with the invitee and the general thinking is that “if you’re invited, you’re approved.” However, there may be certain scenarios where you want to add an approval step for invited users as well.