cabbie - 9:33 am on Dec 11, 2013 (gmt 0)
this is not a unique event, unfortunately.
I have also 2 sites with strong natural backlink profiles that have also been penalised by Google for un solicited spammy links that google think, that I am somehow responsible for.
I object to having to try and remove and then disavow so many obvious spam links and hoped that after several reinclusion emails explaining the situation that sanity would prevail.
It never happened and I have given up and have taken a perverse satisfaction that Google is somehow missing the best sites on 2 popular subjects and the people who find their way to those sites must think that Google is crazy.