walkman - 4:27 pm on Oct 10, 2011 (gmt 0)
High bounce coupled with a high time on site is indicative of a user who reads the article and is not merely skimming it, the article provides a value that the user wants to continue interaction with. High bounce with low time on site shows users are just skimming or shallowly interacting with content. Shallow interaction can be a descriptor of low-quality content.
I have a feeling you are missing the point, entirely. People are much more likely to be a good match, browse and stay when coming in through a good keyword than a long, long tail one. Brands already rank much higher for "good keywords" and now non-brands are now getting a sitewide penalty (maybe) because people are less likely to stay around and browse. You can have a great article but I thought it was about something else or tangentially mentions what I had in mind, I'll leave. Or if I came via a search kwd that suggested that shoes were at a certain price (maybe the price was for another model on that page) I'll leave if the price is different. But if the keyword was general I'd browse.
I doubt the money interest on the algo update side of things, but the rise in certain google properties through panda updates is definitely to be scrutinized.
Search bias, it's hard to prove but start looking around draw your own conclusions. Start with how does Google make money. But anyway, some take it very personally when others suggest that Google is a ruthless corporation racking in some $40 Billion this year, so we should drop the money talk. They're just a few super-smart and caring nerds trying to have fun and change the world. Money just falls in their lap.