: Unique page URLs for FAQ page content and SEO goodness I'm looking for guidance, options and ideas for an e-commerce site that is currently in production and is selling well. We sell primarily

I'm looking for guidance, options and ideas for an e-commerce site that is currently in production and is selling well. We sell primarily one product, but the business has three general categories of customers, let's say CAT1, CAT2, and CAT3.

Currently, all our content, be it video, faq, testimonial or product-features are broken up into three separate pages, one for each category.

example.com/info-page-cat1
example.com/info-page-cat2
example.com/info-page-cat3

The videos and testimonial content is sufficiently unique that I don't think there is an issue. But for our FAQ content and product features there is quite a bit of duplicate content.

In many cases the only change between those three pages is a single word or two. For example: "use this item for CAT1" is changed to "use this item for CAT2". At most, a couple paragraphs change from one page to the next.

Is there any definitive evidence that this will hurt SEO?
Is there any definitive evidence that this helps SEO?

The boss is convinced this content is good for SEO because customers searching for a term should find 'relevant' content.

^ that is problem one; any thoughts or guidance would be appreciated

Now for problem two or problem one part two...

On each of those pages, we have several sections or tabs of information (e.g. installation, general questions, why we're superior, etc...)

The idea has been proposed that each section or tab of information, and each question or subheading should have it's own URL that can be shared with customers and be seen by google (and others search engines).

Is this doable without causing massive duplicate content issues, and if so how?
Can URL control variables be used? e.g. example.com/page1?=section1&=question4
if so, will Google index the root page only?
...or the root page and all the unique URLs example.com/page1?=section2&=question2

I'm sorry if this should be multiple questions on stack, if so I can break it up. But any advice you have in these areas would be appreciated!