Thanks for the new docs. I took a look at the VectorWise part. The Amazon documentation is new, I never saw this before, anywhere. I would propose to put the User Guide as the first item, and the Amazon documentation second, as it will be useful to far fewer people.
Then, when browsing (any part of this documentation) one sees a green square with aplus in it for sections that (presumably) have subsections. While these appear to be clickable, the effect of opening another level of detail in the left bar seem broken.
Did you check this? I have tested in Windoze both with IE8 and with Chrome.