TypicalSurfer - 3:10 pm on Nov 1, 2012 (gmt 0)
From what I can see in the SERPs I watch, Google has actually cranked the commercial intent dial all the way up, not down! It's Amazon all over the first pages again just as during the late Summer 2012 host crowding debacle.
Amazon is "special". For your own sanity it's probably best to ignore them and look for ways to get on the page, co-existing is what I would shoot for, you won't move them off the result page.