Remy Perona

This contact widget comes with microdatas & microformats markup, so that search engines can use it in their search results. They can help display contact information about your business or yourself below your website in search results, and even a map with your location, to improve your local SEO.
The telephone & email are linked so that visitors can click on it and make a call (through mobile or skype) or send a mail from their computer or their mobile devices.
You can also display a static image map of your location, linking to the address’ Google Maps page, and display a download link for a vCard.
More informations on microdatas microformats can be found here :
<ul>
<li>http://schema.org</li>
<li>http://microformats.org</li>
</ul>
Feedbacks and suggestions for improvement are greatly appreciated ! You can go to github to help : https://github.com/Tabrisrp/rich-contact-widget
Rich Contact Widget requires PHP5 to work !
Credits for translation :
<ul>
<li>Slovak by <a href="http://webhostinggeeks.com/blog/" rel="nofollow ugc">WebHostingGeeks.com</a></li>
</ul>

Rich Contact Widget

A simple contact widget enhanced with microdatas & microformats tags for your local SEO

zeko3991

Wikidata References will add a new field to tags and categories for adding a Wikidata Item ID to which tags and categories terms will be associated to.
Also it will provide the site admin the option to add a link to those associated Wikidata items to the head metadata section, or to the tag/category archive title.
User will also have the option to frame tag and categories archive pages links into a Schema.org 
microformat.
This plugin was developed under the requisites of a Wikimedia phabricator request at 
<a href="https://phabricator.wikimedia.org/T138371" rel="nofollow ugc">https://phabricator.wikimedia.org/T138371</a>

Wikidata References for WordPress

Really liked this plugin. Useful. Doesn't add unnecessary taxonomies. Would be interested in seeing what other features it could add. Authors with Wikipedia pages or Wikidata entries could be linked as well from their profiles. 

One of the few plugins that seems to get the core idea really well.

Very excellent

Wikidata References is a plugin developed to help WordPress users to add associations among the tags and categories they use in this WordPress website …

Rich Contact Widget vs Wikidata References for WordPress