CBengine Storefront Plugin For WordPress allows you to present all ClickBank products available through their FEED with your affiliate ID.
Products are automatically updated through the CBENGINE feed.
ClickBank affiliate accounts are free at ClickBank.com. SImply sign up and receive an affiliate ID, then enter that ID into your CB STorefront Options. This will generate a purchase link with your affiliate ID in the URL, and this will be tracked by ClickBank whenever a purchase is made. You can Log Into your ClickBank account to review all affiliate purchases that have been made.