Optism provides permission-based, mobile marketing services to mobile operators, agencies and brands. Giving mobile subscribers the opportunity to opt-in to advertising messages based on their preferences is the core tenant of our service. Our blog series Permission Marketing in the News has been highlighting mobile and other permission marketing news for the past year. The leading proponent of permission marketing is Seth Godin who coined the term in his book Permission Marketing in 1999. To celebrate our one year anniversary, we are running a series of blog posts summarizing his book chapter by chapter and analyzing how changes in the mobile and advertising marketplace have impacted the recommendations in his book.