VigLink turns ordinary links into ordinary links that earn money. VigLink works with over 30,000 advertisers and retailers to monetize links. They convert existing links into monetized links or insert new, revenue-generating links. User experience remains largely unaffected. Clicks that turn into sales earn a commission. Typi...
Apps that link to your content can then use this metadata to deep-link into your app, take users to an app store to download the app, or take them directly to the web to view the content.
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