Beware Hotel Booking Hijinks!
The original poster was concerned the HotelClub - which is in fact owned by the conglomerate Cendant (they own Budget, Avis, Ramada, Travelodge, Howard Johnson, etc as well as Lodging.com) - was stopping him getting more than one commission from a user that clicked through to the Hotel Club site. In other words, his user went to HotelClub, became a member there and in future, no matter where they came from, no commission was given by HotelClub.
Fairly heavy moderating, cut much of the stuff that would have been useful - though you can get it from the original poster. I am convinced that he was correct in his interpretation of the emails sent to him by HotelClub
The affiliate manager has now arrived on the scene at WMW. I am unsure if they have changed their policy as a result of this thread. I suspect they have.