I own a restaurant in the Twin Cities and had been using traditional advertising methods for years up until about January when we started using SMS marketing.
I was quite skeptical about it having much of an impact, but in the end I was quite surprised. Our sales went up about 15% and have slowly climbed to just below 20%. We have been running a pretty steady campaign as of late sending out all of our food and drink specials.
We went with
Briightmedia.net for all of our SMS marketing stuff. With them it is really easy to get setup and get going with your first campaign. I started off with a free trial, just put in the promo code "trial" when you sign up.