OH! The reason I assumed they didn’t have any banners and therefore never promoted them is that on thier affiliate page they have a link to the following:
This is supposed to be a preview of thier creatives. I just assumed they never bothered to make any. They really have to update this page. It makes me wonder how many potential affiliates this has made them lose.
I might just give them a try then.
Antoine
(edited: that link just brings you to the main affiliate page, click on number 7 in the right menu to see what I mean)