If the shop has an open affiliate program (meaning, anyone can join), just let us know!
You will find a request form on the shops page. Just click the button at the bottom of that page and let us know of the shop!
If the shop does not have an affiliate program, just go ahead and add links with either the bookmarklet, or using the "add link" button, found at the bottom of the edit list page. LinkDeli will auto-pick the icon for you as well.