A couple months ago we mitigated a 12-year-old site -- about 2,000 pages -- to WordPress.
The transition was smooth (301 redirects), we haven't lost much search juice. We have about 75 multi-page articles (posts); we're using a plugin (Organize Series) to manage the pagination. On the old site, all of the pages in the series had the same title. I've since heard this is not a good SEO practice (duplicate titles). The url's were the same too, with a 'number' (designating the page number) appended to the title text. Here's my question: 1. Is there a best practice for titles & url's of multi-page articles? Let's say we have an article named: 'This is an Article' ... What if I name the pages like this:
-- This is an Article, Page 1
-- This is an Article, Page 2
-- This is an Article, Page 3 Is that a good idea? Or, should each page have a completely different title? Does it matter?
** I think for usability, the examples above are best; they give the reader context. What about url's ?  Are these a good idea? /this-is-an-article-01,  /this-is-an-article-02, and so on...
Does it matter? 2. I've read that maybe multi-page articles are not such a good idea -- from usability and SEO standpoints. We tend to limit our articles to about 800 words per page.  So, is it better to publish 'long' articles instead of multi-page? Does it matter?  I think I'm seeing a trend on content sites toward long, one-page articles. 3. Any other gotchas we should be aware of, related to SEO/ multi-page? Long post... we've gone back-and-forth on this a couple times and need to get this settled.
Thanks much! Jim