ClickFlow is a tool we built to help companies increase organic traffic without more backlinks or posting more content. Through ClickFlow, companies can automatically see which pages on their site have the most potential to grow revenues – such as pages that have high impression count in search but a low click through rate. Using that information, ClickFlow will keep track of headline tests to help grow your click throughs from search terms you already rank for.
In the case of cost per mille/click, the publisher is not concerned about whether a visitor is a member of the audience that the advertiser tries to attract and is able to convert because at this point the publisher has already earned his commission. This leaves the greater, and, in case of cost per mille, the full risk and loss (if the visitor cannot be converted) to the advertiser.