Hey there,
You need to get in contact with your account manager there. Most are pretty helpful. I presume you are not on a paid-for-management service so there are three options (of course ensuring that your site,prices,availability etc,etc compete with everyone else).
Ask (and they will) let you have a chat to an account rep there. They will give you some tips!
Then it's just a case of making relationships via various channels with affiliates that promote the most similar competitors.
Top tip: sign up as an affiliate to your competitors and see what they are up to. You also need to be aware of what contractual agreement you have - for example when I work with a clothing site I refuse voucher and also brand name bidding (as I could do that myself)!
Haven't looked at your site yet, but feel free to IM for a little advice
