Is pay per click losing momentum? Is growth in the channel waning? In a recent blog post, Steve Rubel wrote “I am calling a top to this market now. There are five reasons why a pay-per-click advertising recession looms!” To further explore pay per click's future, we turned to Steve and to Alan Rimm-Kaufman. Alan leads the Rimm-Kaufman Group, a direct marketing services and consulting firm, and he’s a fan of pay per click. Steve, senior vice president in Edelman's me2revolution practice, has...