iframeflow.js | Web Platform Team Blog
"the IE implementation was based on an earlier draft and works differently. In particular, the source of a named flow – the elements you apply the -ms-flow-into property to – must be iframe elements."
HTML and Specifying Language · Jens O. Meiert
"Any existing provisions that mandate using @lang when important to do so should remain in place. Similarly, if documents are likely to be served under conditions where no Content-Language can be set, @lang should still be preferred."
"SR users can navigate through headings, therefore changing the content of headings may lead to confusion."
Video SEO in a Post-Rich Snippet World - Moz
"In terms of owning Google SERP real estate, YouTube has just become one of the most powerful tools in any SEOs arsenal."
Algorithm Inception: Inside The Rich Snippets Algorithm
"while the landscape continues to shift beneath our feet I believe implementing structured data is one of the smartest moves you can make given Google's clear and continuing efforts around entities, the knowledge graph and Knowledge Panels."