Google+ platform websites integration using the Google+ platform tag.
Let visitors recommend your content on Google Search and share it on Google+.
This script is the defacto way to enable use of HTML5 sectioning elements in legacy Internet Explorer.
A family of standard web feed formats used to publish frequently updated information like blog entries, news headlines, audio and video.
This site uses the viewport meta tag which means the content may be optimized for mobile content.
Open graph description entity tag