As a discussion point, I’m interested in hearing thoughts on the proper open graph markup for multi-page articles.
For example, in WordPress, a post may be “paged”. This means the post/article has been broken into separate pages.
For the og:title element (a required OG element):
- Make it the same on every page?
- Make it unique on each page after the first page by adding "(Page X) at the end of the title
For the og:url element (a required OG element):
- Make it the same on every page in order to force links back to the main article page?
- Make it unique to match the current page (ie, my-article/2/)
For the og:description element (an optional OG element):
- Make it the same on every page?
- Make it unique on each page after the first page by adding "(Page X) at the beginning/end of the description
- Drop it from all but the first page
As an overarching question, the discussion here is more about how search engines expect these article pages to be marked up in order to properly index them as separate entities all worthy of mention near one another in the listing (Or as breadcrumb links or indented listings).