A few years ago there was a benefit of breaking up a document into smaller chunks - say, for every h2 (second level headings) The idea was that rather than having one big document, you could have lots of small ones to rank on all your h2's. And it seemed to work pretty well. Today, I'm finding that the content that does the best from an seo perspective is my longest content. And that the big content does way better than the sum of the parts. So, I would no longer recommend chunking up your articles, unless they're just too long to read. Some of my best articles have 2-3 thousand words. I also find a nice correlation between number of comments and my best posts. So I leave them all on the same page, making it super long. For some examples of super long content that are doing great from an seo perspective, check out the group interviews on my site (wordstream.com). Those articles have +10 minutes on the page on average and generate tons of traffic for my site. Google these for example: Ppc bid management guide, Importance of ab testing, (etc.)