Martin_Ice_Web - 10:41 am on Feb 18, 2013 (gmt 0)
you did not explain why former ver good sites have been pushed down, only the algo is learning and not a learned algo is IMO to less. Even a learning algo should see that most of the serps are not matching to the query - assuming the algo is able to make a quality check but that would implify that the algo knows what the user is searching for but that is based upon metrics, search behaviour...
I am with you when it comes to rate a document. This part seems the learning algo. But the serps itself are a fixed algo that is feeded by the learning algo. And this two do not correlate together.
It like Wilburforce says
I still don't see, either, why previously favoured sites are consistently dropping hundreds of places. It is as if the human input is saying "put a high negative score on whatever we did before".