Hot answers tagged markup
They're using microformats, specifically hCard and hCalendar. Along with RDFa and JSON-LD, this is an alternative to microdata. See Google's Rich Snippet spec for people here, and here's my public LinkedIn page viewed with Google's structured data testing tool, showing a preview Rich Snippet and the extracted structured data.
This depends on the actual content (there is an important difference between, e.g., a hash and ASCII art) and the context (editable vs. presented content). So after choosing the appropriate element (and possibly WAI-ARIA), HTML5 offers the following options: The language tag zxx (IETF BCP 47/IANA registry) can be used for "no linguistic content": ...
Only top voted, non community-wiki answers of a minimum length are eligible