In reply to this conservation: @glennjones. Is microformats using http://schema.org compliant with W3C. I see RDFa is on the way to being approved? 14 years ago – Daryl Cygler on twitter @DJCygler As long as Google supports microformats, microdata and RDFa the choice of mark-up for Rich Snippets is up to you. There all valid 14 years ago ‐ Also on: Twitter | Favourite Retweet Reply