Comment Bad Summary - Advertising is not spam (Score 2) 64
Say what you want about tracking cookies and retargeting techniques but this story has nothing to do with spam. They seem to have patented a way to server advertising to users across many social networks which could then expose those adds to friends and friends of friends of the user who first sees the ad.
This isn't much different than all of your friends seeing that you have "liked" a page on facebook. Marketers bank on the hope that some of the people who see what you have just "liked" will follow the link and possibly connect with their page as well. It's voluntary and opt-in and pretty unobtrusive.
I don't see what about this Google concept is different from that.