Creating a new topic for this as it seems to be a new ad mechanism / type, rather than a new ad to be appended to the generic block ads topic which are not currently being blocked :
Google are apparently coming up with a new method of tracking people - AdID
http://www.zdnet.com/googles-anonymous-ad-tracker-adid-could-replace-third-party-cookies-7000020833/
So probably a new method for PrivDog to ■■■ on 
( If any mods see this as also relevant to Comodo Dragon / IceDragon development, please pass on the information as necessary )