Do you know what google AdSense is? I mean, I see you slandering Microsoft and Bing but it appears you really don't know what AdSense is for since Microsoft doesn't have an AdSense competing product... They have PubCenter but that barely out of beta and is more app centric for Windows 8 and Win Phone.
Biggest loss here is for Yahoo as they didn't need a product like AdSense to do contextual targeting just few years back. They could have done it themselves... But since they are moving away from an Ad network and more towards a content generating publisher, they don't have the data anymore.







