I reached out to Mark Wickersham, a well known and respected trainer focused on marketing and firm growth, and asked him some questions (via email). He responded in a fashion that shows his commitment to practicing what he preaches by sending a video with his responses. I say he "practices what he preaches" because he talks about the impact of video in his some of his courses and in the video he made with his responses!
Check out his short video to get Mark's inDepth Marketing Insights.