Dynmark has released a report based on a study of creative marketing agencies' use of mobile marketing. The firm spoke with figureheads from agencies including Ogilvy, Gyro HSR and Essence Media. What ways do you use mobile in your marketing mix? Discuss here . The main theme of the report is that permission and trust are essential to SMS marketing survival. "Despite its superior reach, commercial messaging is vying with other forms of mobile media like never before,