walkman - 5:56 pm on Oct 14, 2011 (gmt 0)
Wouldn't an analysis of the on-page content also be able to evaluate its depth, comprehensiveness, and relevance. Then the algorithm could combine this with statistical information about visitor behavior to evaluate quality
Yes and no. 500 more words don't equal a better explanation for example and Google cannot tell what's true or not. Can Google tell that "Obama is the President of Kenya, the country where his father was born" is false as they analyze, sort and rank the gazillions and gazillions of pages? What if you use satire? Or debunk what others said? If a topic is questionable, who is Google to decide what's true?
And then a lot of e-commerce sites with no real sentence structures have been destroyed as well by Panda, when others (can't mention that almost all are top brands) have done extremely well without much more text.