Reaching influencers and getting them to talk about you via social media, mobile and content creation platforms is getting bigger by the minute. It is one of the fastest-growing social marketing practices. Among the six key influencer marketing trends coming in 2013: earned media will rival paid and owned; data will drive content creation; B2B will go social, and niche content will give way to crossover content. To see them all and get insights, read away and tell your friends.