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.
Facebook's Like button is the quickest way for people to share content with their friends. A single click on the Like button will 'like' pieces of content on the web and share them on Facebook. You can also display a Share button next to the Like button to let people add a personal message and customize who they share with.
Open graph description entity tag
Sites who has this tag are verfied by google to use WebMaster tools