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God, I hope so. They have to be doing this already. I have no evidence of that but, it would seem to be an effective anti-spam measure.

If they aren't then we need to lobby for it. I bet the reality is that if they went on a grammer jihad (de-index me for that word) half the sites on the net would disappear overnight.

Guessing it's really hard to create a set of rules for this that doesn't drastically impact everything in the index.

I didn't realize the reviews were that long. That does kind of present a problem and yes you don't want to hide them in a non-display element. I have used css z-index and slide the review into the viewport instead of using javascript to switch the display attribute. But I have only done this on a few small sites. Nothing like yours. The reviews were of limited length so that worked for me. Probably won't work in your case.

Hum, interesting problem. You said you already have a preview and read more link on the product page but the review page out ranks the product page? Or is this just theoretical?

Sounds like you need to do some A /  B  testing to find out why and then promote the preforming content to the main page.

Stupid question but, if your review page is already highly ranked why not add the product to each of those? I have to assume there is an add to cart function on each page.

This seem like less of an SEO question then one about conversion rates. Which is OK. That's the whole point.

If these other pages were of no rank value I would say I am part of the 301 camp. But seeing they do have some value I think the loss of any traffic to your call to action would out weigh the questionable benefit of narrowing your focus.

So keep them around to support the main pages. Maybe push them down a category level.

I think the answer to this one is pretty easy. Just look at every other e-com site with reviews. They are all on the same page as the product. For usability sake the review are usually hidden in some way on the same page.

Tab, accordian, read more links etc.. When it comes to this type of question always follow the SEO masters at amazon.

I also suggest you mark up the reviews in a micro format. Not for SEO but for click thru rates.