Restrict Content Pro – Affiliates Pro Add On is an add on WordPress plugin by mordauk for Restrict Content Pro that provides an integration for the Affiliates plugin from itthinx.
With this add-on you will be able to have affiliates register on your site and receive referral earnings anytime they refer a user that signs up for a paid membership.
This add-on works with both the free and Pro version of the Affiliates plugin.
Download: http://wordpress.org/extend/plugins/restrict-content-pro-affiliates-pro-add-on/