said 2 months ago:
It’s not an area I’m especially well versed in, but I believe that most SMS services have local vendors, so I’d start w/a Google search on “SMS + [your location].”
They can also probably make some suggestions on mobile coupons, since they are also delivered via SMS.
You could also reach out to someone who sells mobile ads locally. Here, the local NBC affiliate does a lot of that b/c their owned by Gannet who has a deal w/Yahoo.