Marketo provides a complete marketing automation software solution that is powerful and easy to use for fast-growing small companies and global enterprises alike. Built for marketers, by marketers, Marketo is designed to allow companies to launch their first campaign in days and scale to meet the needs of the most complex globa...
Allows a website to define how a page is rendered in Internet Explorer 8, allowing a website to decide to use IE7 style rendering over IE8 rendering.
Open graph description entity tag
The Open Graph protocol enables any web page to become a rich object in a social graph, a open protocol supported by Facebook
Sites who has this tag are verfied by google to use WebMaster tools
A canonical link element is an HTML element that helps webmasters prevent duplicate content issues by specifying the "canonical", or "preferred".