Glad you asked !
ReviewCash.com offers sponsors and paysite owners a custom whitelabel domain review site. eg.
www.SexMegaDirectory.com
What we do is review and add all YOUR sites to your whitelabel review site we setup. We actually place only your sites on the index page plus we put all your sites reviews at the top of applicable niche page in the review directory.
This allows you to send your members area traffic plus exit, 404 traffic etc.
Not only therefore do you get members upsells but you also make coin from your competitors if they choose to signup with them.
All affiliates get paid one single payment covering 36 sponsors.
Hope this helps ...
David