santapaws - 5:55 pm on Jul 22, 2008 (gmt 0)
ok having thought about this i think it may be to do with a change in the way google handles the keyword tags for a page. Once a strong tag exists for page nothing seems to shift it. If you change the topic for the page it will still rank for the old tag for a long long time, so long that i have yet to see the end of one. So these pages i think are ranking not because of strong inbounds now but because the tags were already established and google perhaps doesnt even bother with on page factors if a certain type of strong tag exists. This could also hinder that page for ranking for newer keywords for that page if the naure of the article changes somewhat.