I think this may be something that's got lost with the new site design - I seem to remember them being easier to find in the past, with the old LinkShare sidebar.

Affiliate stuff is buried down the bottom of the page at the moment, and the banners are buried further behind the Join Us link. Maybe a 'Link to Us' entry in the About Us menu might be easier to find? That's one of the first places I would look, although there's no obvious logical place for it to be. Site design is hard. ;)