Today I figured out some strange thing with AdsOptimal. I have implemented their AD-code on my website. However, if you enable the Chrome-Developer-Tools and analyze the Source Code of your website, then it shows an UberCPM ad... It looks like this: <!-- adsoptimal ad code --> BLA BLA <!-- UberCPM AD --> upbercpm ad shows / but labeled as adsOptimal <!-- UberCPM end--> <!-- adsoptimal end --> But the most weird thing is, that the ad is counted in both networks... I don't have any kind of UberCPM ad on my website (but I have an UberCPM account). And somehow it counts the impression in AdsOptimal and UberCPM... Did someone had this behaviour before?