new members invite there friend

Hello,

how can I make my CB to be able for new members to invite tham throw email contacts, facebook or other social networks.

Is there any special application?

Is it possible to set that they can only register if they invite there friends?

Thank's!

Livike wrote: Hello,

how can I make my CB to be able for new members to invite tham throw email contacts, facebook or other social networks.

Is there any special application?

Is it possible to set that they can only register if they invite there friends?

Thank's!

I have not seen such an app.

Closest thing we have is CB Invites that allows existing users of your site to manually invite one friend at a time giving their email.