The best marketing tools for this population in my opinion are the E-Cards, they are free and you can send up to ten a day.
The next best marketing tool is word of mouth, just talking to friends and family. Both of these options are totally free.
The third best tool is the tab Flyers.(3rd only because there's a small cost involved)
They can print them with their SFI ID#, then post them at libraries, stores, schools, and other public places.