Invitations are important to create network effects and exponential growth of a community of interest. The Invite module adds an 'Invite a friend' feature that allows your users to send and track invitations to join your site.
Invite also adds a new registration mode called New user registration by invitation only that allows you to maintain a semi-private site.
- Gives site administrators the possibility to track who invited whom (2.x only).
- Has statistics about the top inviters of your site.
- Allows to create closed communities that require invitation.