Wilburforce - 12:23 am on Jan 7, 2013 (gmt 0)
What you're seeing is a byproduct of machine learning...
As I said in an earlier post: there are signs that some of Google's current efforts might involve AI, and they are not promising.
Currently #1 for my key term (widget sales) is a site whose primary buisness is competition widget throwing, and although they do sell used, poor quality widgets (on another page with no direct link to it), the term "widget sales" isn't mentioned on the #1 page at all.
If the machine is learning to find widget sales, having been instructed by Google that every site with the exact phrase widget sales on it (or with widget sales in backlinks to it) is an impostor trying to game the system, we may be waiting a while for it to master the task.