Good candidates to send SMS messages

Restaurants and bars are a great fit for SMS marketing.

Reach out to customers and let them know about discounts and special items/ events. Pack your place!

Motorcycle and car dealerships work well with SMS.

There are always new models coming out, specials on inventory and with motorcycle dealerships there are always rides, events and charitable activities happening. Get more people to your showroom.

Bands.

Expand your fan base. Reach out to them and let them know where your next gig is. Promote your gig. Play to a crowd instead of a few people. Let your fans know about newly released material and point them where to buy it.

Social clubs and Churches.

Reach out to your members and remind them of an upcoming event. Has an event been postponed or relocated? Tell everyone in minutes. Connect with your congregation through daily prayers, words of wisdom, upcoming events etc...

Retailers.

Tell customers about special deals. Move merchandise you are overstocked with. Get people in your store. Send out mobile coupons. Remind people how wonderful your business is.

TV and Radio stations.

Poll listeners. Have fun contests. Expand your listener base by making it more interesting to interact with you.

Charities and non profits.

Raise money and help support the cause. Raise awareness.

Political candidates.

Get peoples votes. Get them to the rally. Get your political message out to the people.

Anyone who would find it beneficial to reach a large group of people instantly.