What a timely blog post given the recent Interflora debarkle, http://davidnaylor.co.uk/interflora-what-really-happened.html
Since Cutts explicitly mentions advertorials in this post, I think it's safe to say this is Google's "official" response to the Interflora situation.
Google needs to penalise their own website by the sound of it - http://www.seobook.com/google-advertorials
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