MoPub, a Twitter company, is the leading ad server and programmatic exchange for smartphones.
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.
This site uses the viewport meta tag which means the content may be optimized for mobile content.
Open graph description entity tag
Sites who has this tag are verfied by google to use WebMaster tools