I completely agree with Jacques that they should have been up front with him about the change, shortformblog suggests that they were with them, so perhaps the blog provider wasn't passing along the email? What ever, its annoying I'm sure to wake up and find you've gone commercial!<p>As a web site that gets quite a bit of traffic (blekko.com) It is interesting to see both sides of this conversation. As the 'ops' guy I'm always getting cold called/emailed from salespeople for services that will "drive traffic to your web site" and the business model is all very similar. Apparently it works well for these 'service providers.'<p>To illustrate, lets make up a company, we'll call it "megatraffic" or MT for short. They call me up and they say, "Chuck we can drive millions of page views your way, which you can monetize with this ad-provider network. We'll share revenue 50/50, how cool is that?"<p>Their other guy calls me up and says "Hey Chuck, we make your site visible to millions, for just a small price per click, we'll put a link to your site on the {hundreds/thousands/millions} of sites in our network."<p>So MT here sells both ends of the pie, they "become" a sort of ad network by charging folks who contribute links to the customer site. And then they also get 50% of the revenue when someone follows that link and then clicks on an ad at the landing page. That's a pretty sweet deal for them, kind of a lame deal for the patsy who is paying and paying. It is like affiliate marketing where you don't realize right away that you are an affiliate.<p>Then we read about (and I block from our search engine) on a daily basis organized groups of miscreants who then write code to click through these networks to shake loose the pennies and nickels and quarters that the revenue generates. Given Google's publicly reported ad revenue its easy to see how clever people can create multi-million dollar revenue streams with just a bit of programming, maybe a botnet or two, and a complicit traffic aggregator.<p>All that money just laying there. First you pick up a few pennies, then a couple of bucks, next thing you know you're working to squeeze every click you can off the page like HuffPo.