LinkedIn Plugins are a way to drop LinkedIn functionality into websites.
10 Nov 2007 ... Get the Digg Widget widget on Widgetbox.com! Show the Digg stories youve Dugg, in your choice of colors! Straight from Digg themselves!
Google+ platform websites integration using the Google+ platform tag.
Open graph description entity tag
Open graph title entity tag
The average rating based on multiple ratings or reviews.
Sites who has this tag are verfied by google to use WebMaster tools
The http-equiv attribute provides an HTTP header for the information/value of the content attribute. The http-equiv attribute can be used to simulate an HTTP response header.