In the last 10 years, it appears that Google has turned from "doing no evil to being the bad guy," according to Kevin Lee. He examines a few "sources of discomfort," from trademark policy changes, to quality scores and conversion data.
Lee goes as far to suggest that search advertising has begun to look a lot like a toll or tax. Supported by a variety of examples, he writes that while Google aims to become a one-stop advertising and media portal offering great opportunities for scores of advertisers, the "media concentration also has many advertisers and regulatory agencies nervous."