Hi! Does anyone know some ad network management system with A/B testing of eCPM? I mean the platform in wich I can insert several Ad network codes (for ex. AdSense, Bing, AdMonster, etc.) and it will show advertise to visitors in random. So at the end of experiment I'll see what network will work with maximum eCPM for me. Some kind of AdSense experiments, but for all Ad networks. Thanks!