Pinterest Rich Pins https://developers.pinterest.com/rich_pins_overview/

OGP - Open Graph Protocol http://ogp.me/

DC - Dublin Core Ontology http://dublincore.org/

FOAF - Ontology http://xmlns.com/foaf/spec/

Google+ Snippet Generator https://developers.google.com/+/web/snippet/

Google Structured Data Testing Tool https://developers.google.com/structured-data/testing-tool/</p>

Twitter Cards https://dev.twitter.com/cards/types

Schema 2.0 http://schema.org/version/2.0

W3C Markup Validation Service https://validator.w3.org

Manifest.json Specificationhttp://www.w3.org/TR/appmanifest/

Useful reference for embedding different content types

Useful tools http://schema-creator.org/ http://iframely.com/debug http://www.ldodds.com/foaf/foaf-a-matic.html

Validation Results

Github pages link http://fintank.github.io/semantic-html/

IFramely results results

Structured Data Linter results

Facebook debugger (you will need your own fb app id) results

W3C Validator results

Structured Data Testing Tool results