Zeep Media

Zeep Media, with their service labelled as "Self-serve SMS Advertising", focuses on delivering ads on mobile platforms by placing targeted advertisements within SMS messages that are sent by publishers to their respective subscribers. Recipients have the option of responding to the mobile ad and receiving more information in a new SMS message, or by clicking a link to visit your website via their mobile device.

From the website, for publishers:

We place ads via an auction. Advertisers set a maximum bid they're willing to pay for a response to their ad and compete with each other to place their ad. Our advertisers always pay fair market value and ads that perform better get increased exposure.

Along with a decent tracking and analytics platform, Zeep Media allows for location-based targeting of ads as well.

Visit Zeep Media