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I am running into this problem as well.  Does anyone have an answer.  I was a customer a year ago and had no problems.  Stopped for a while and then came back, my site was never able to be crawled again.  A few months later I did make a few changes on my site, and just tried again today, but it only gets 1 page.  Once before they told it had to do with something like http 1.0/1.1 which makes no sense.  Not sure why google, bing and the rest can crawl the site, but this service can't.  Hopefully someone has an answer.  I looked at that link that is mentioned and I do not feel that any of those are causing the issues.

I have also noticed a couple of older sites dropping off the "Bing/Yahoo" charts, all the way across the board, and ranking very high in Google. I have found that uniform across the board drops like that always indicate some serious breech in SE policy, and/or penalties as a result. Mere variances in priorities can't account for a 50+ position difference. I have noticed this in the last few months or so. There is something much more to it than just local listings. It is the most unusual and disturbing trend I have ever noticed. I agree Bing WT's are a good place to start, but I haven't yet found the culprit either. Don't trust a quick answer!

It doesn't really matter what you're use, as long as you're consistent and get people to link the right version.

Expandable and collapible DIV's are just fine for SEO. They do a great job of accomplishing great design without compromsing content for SEO. Yes, Google can crawl that content just fine. Here's a link to a great webinar that specifically addresses some great Pro-Tips regarding how best to use these: http://www.seomoz.org/webinars/designing-for-seo Hope that helps! Dana

Thanks Mike, many useful advises.

First, don't worry so much about how much content is on the page. You should format your pages based on what works best for what the searcher is looking for. If there is demand for information on Biomass Industry types and there is enough content for a page, then create a separate page. If there isn't enough content for one of these pages, and it makes sense for the user to land on the more general page, do that.