This system allow users to quickly share invitations to your forum! Which at the end means more traffic, more content, more revenue!
Invitations can be limited using a credits system, this way users need to earn credit before inviting! You can choose which membergroups have unlimited credits and for those who don't have they can earn them with days since registration, karma or posts!
Right from your admin panel you have the option to give credits to certain members or membergroups, that way they can invite more friends even if they have reached their limit!
From admin panel you can restrict registration to be enabled only by invitation! Which means that only invited users will be able to join your website!
From each member profile you may see who he/she has invited to the forum with a nice UI that allows you to quickly recognize those members that have been gathering important users to your community!
If selected you can define for how many days an invitation is valid!
From admin panel you can log and control everything that is invitations related, this way you can keep control over strange situations and abuse of the system!
Users that have most invitations being used can be shown at the stats page, encouraging users to bring more people in!
You can enable the option to show quick links to easily distribute invitation using social networks like Twitter and Linkedin! This makes the entire sharing process a lot faster!