Maybe more for the media guys, but it's countless times that i have had some discussions with the media agencies that work for some of our clients over the way a campaign of ours is published. Today, while reading Techcrunch, i found this article called "Let's kill the CPM" by Shelby Bonnie, ex-CEO at CNET and now at Whiskey Media, about why he thinks the concept of CPM shouldn't be used anymore when selling a campaign. It raises some questions without giving specific answers, but i think is worth reading, at least sets the tone for a conversation on the subject, wheter you agree with him or not.