A simple library that provides standard Unicode emoji support across all platforms.
Google+ platform websites integration using the Google+ platform tag.
BuddyPress helps you run any kind of social network on your WordPress, with member profiles, activity streams, user groups, messaging, and more.
The Tweet Button is a small widget which allows visitors to share content and connect on Twitter.
This script is the defacto way to enable use of HTML5 sectioning elements in legacy Internet Explorer.
A web page. Every web page is implicitly assumed to be declared to be of type WebPage, so the various properties about that webpage, such as breadcrumb may be used. We recommend explicit declaration if these properties are specified, but if they are found outside of an itemscope, they will be assumed to be about the page
A scheme.org entity that represents an organization such as a school, NGO, corporation, club, etc.
A scheme.org entity that represents a person (alive, dead, undead, or fictional).
Sites who has this tag are verfied by google to use WebMaster tools