Here is how to do it properly: https://webmasters.googleblog.com/2014/02/infinite-scroll-search-friendly.html

Demo: http://scrollsample.appspot.com/items

To sum up...

1. 301 redirect all non-www urls to www versions (since it has a higher page authority) and add canonicals to all pages with the www version of the url
2. For all lower case / upper case page duplicates... pick one, set a canonical tag and 301 to the chosen case, make sure all your links point to the correct url case.
3. 301 redirect default.htm to your root domain - http://www.cheaptubes.com

Common consensus: 301 redirects will drop your rankings for ~ 2 weeks but you should bounce back in rankings after then. You do lose a small amount of link juice but if the word "guides" is a common search term for your widget queries, it might be worth the move.

In addition, I would review the backlinks you currently have, sort out the most powerful backlinks, and contact the respective webmasters to change the URL to the new address and avoid the redirect.

I wouldn't say there is a limit but you if you are writing about a limited topic, the more you write, the less focused your content may become. Although it will improve long tail, could hurt the target phrase you are trying to rank for.

In addition, if you just start repeating yourself over and over again, it wont do you any favors. You are better off writing more succinctly with high quality so that people looking to solve a specific problem can visit that page and find a solution (and hopefully link back to it!). If its too long, it might be harder for a person to find what they are looking for.

Read these two posts... they cover everything.

• http://moz.com/blog/canonical-url-tag-the-most-important-advancement-in-seo-practices-since-sitemaps
• http://moz.com/blog/rel-confused-answers-to-your-rel-canonical-questions

Stumbled upon some additional information and decided to update you...

According to the internationalization FAQ...

Q: <a name="q5"></a>Can I use automated translations?
A: Yes, but they must be blocked from indexing with the “noindex” robots meta tag. We consider automated translations to be auto-generated content, so allowing them to be indexed would be a violation of our Webmaster Guidelines.

So if you decide to autotranslate the text, you should use a noindex tag instead of the hreflang tag.

Nope, you are fine.

Duplicate content = 2+ copies of the same text on 2+ separate indexable URLs

Theoretically, if you paginate it correctly, it shouldn't make a difference (each paginated page would be treated as part of a whole). If you don't, might hurt you for having more thinner pages vs fewer quality pages (it doesn't sound like you will be targeting any additional keywords).

Schema microdata is a type markup that results in rich snippets (bonus details in SERPs).

Other rich snippet markups include RDFa and Microformats

1 visit, 3 pageviews

From an SEO perspective, each page is considered a part of the same article. So the difference is really you get more page views if you split it up (given that users will choose to go to next page)

Should only have 1 H1 per page... ideally containing the target keyword. If this were a blog post, your H1 would be your article title.

H2 would be used more for subheadings, i.e. if you split your article up into sections with subheadings, each should be an H2

H3-H6 are just sub-sub headings, etc.

Overall, I believe H1 (and perhaps to an even lesser extent H2) has any SEO value - even though it is very minute since it's easily gamed.

Ah, in that case the main factor is: how are all ranking currently? If they each receive traffic for their respective local keywords, it would make sense to just keep them as is (don't fix what ain't broken).

However, if you feel they aren't getting the rankings they deserve, you should combine all the sites into 1 and consolidate the authority. As long as you set up 301 redirects correctly, you should be able to transfer your rankings and even improve them (if you set up your internal linking structure correctly). Just know you will most likely lose rankings for around 2 weeks.

Something to keep in mind: it's much easier to maintain and improve one website over three. If you plan on generating new content (as you should), having 1 blog with kickass content is far better than 3 mediocre ones.

Best,
Oleg