wheel - 5:17 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

I suspect part of the problem is that we don't even know what's being measured. If they're looking for depth, or relevance, or comprehensiveness, than webmasters can provide content that matches these attributes - even if we don't know how they're being measured.

For links, we know that relevant and authoritative matter. I don't need an algo to tell me if the site is relevant and authoritative - I can tell by looking. And we know relevant and authoritative both matter as general attributes.

But panda and page content? is it depth? comprehensiveness? Relevanance? It seems like we don't even know *what* they're looking for - nevermind figuring out how to offer that.