'm getting a growing sense that anchor text has been dialed down and on-page factors are dialed up. What I've noticed is that pages that were "Google bombed" into ranking for odd phrases are no longer getting that traffic. And added, I'm seeing more sensibly targeted traffic based only on on-page content. If this is so, I like it.
Maybe G just putting more emphasis on anchor variation. I'm guessing Google bombers are usually to lazy to vary it.