IF you added a place on the profiles pages where a member could add links to their store/stores offsite, they could then add any link to their businesses without being limited to the 1 or 2 lines allowed in the signatures.
Then the signature line might say something like "Visit my stores for great deals" My stores are listed HERE. With the word here being a link to my profile page.
If those links on the profile pages are done with small logo images, they would stand out to the visitor and help drive traffic between the two sites and make it clear to the visitor that they are clicking on a personal ad to a store that is associated with the person and not this site.
