How can a vendor boasting a client list brimming with the world’s largest studios, media technology companies and video streaming services elude the radar of the TV industry for 30 years? That is because campaign analytics expert MarketCast has relied almost solely on word of mouth to grow the business, a strategy that we are inclined to say reflects its somewhat old-school bread and butter business, which comes from the data collected from conducting some 2.5 million surveys a year. The irony of MarketCast’s almost complete lack of a marketing department was discussed in conversation with CEO John Batter and CMO Graham McKenna this week, two names who you might remember from the Gracenote golden years. We sincerely hope the…