Whitey - 12:28 pm on Jun 12, 2013 (gmt 0)
Just adding to this, I'd like to think Google has really been listening to the webmaster community on this issue and responded fast for folks who would otherwise never know. This communication was registered on March 16, 2013 on behalf of the BBC with John Mueller responding:
Looking into the details here, what happened was that we found unnatural links to an individual article, and took a granular action based on that. This is not negatively affecting the rest of your website on a whole. [productforums.google.com...]
Later on around 23 April, 2013 Mozilla was penalized, but as it transpires for only one page. John Mueller and Matt Cutts responded seperately: [productforums.google.com...]
I'm not sure if at the time of this advise, plans were in place to advise webmasters, but if not, this is a really fast response to providing a "half way solution" by providing examples. Let's see what transpires and how practical it is to work with.