Interesting read. It sounds to me like this might be a problem for people who maintain a lot of those thin affiliate or AdSense sites.
Other than judging a site by its size and the total amount of content, I’m not sure how they will go about this. It is completely feasible that a site could have one 500 or so word article that answers exactly what someone is looking for. How do you filter out the crap without hurting a quality site like the example I just mentioned?
I’m not sure what the answer is, but I’m glad I do not have to figure that out.