I think the point is that there are multiple sites like eHow, and searching each of them individually and then deciding which results were the best is sub-optimal. Plus, it prevents the serendipitous discovery of new sites like eHow.
If only there were a way to search multiple content farm sites at once, and rank those results according to how useful they were...
But it is still doing its purpose. You can just tell it what you want to see.
I wish there was a way in Google to indicate you'd like to see results from a site ranked higher FOR YOU. I imagine they already learn that when you click on that domain in two separate searches.
If only there were a way to search multiple content farm sites at once, and rank those results according to how useful they were...