ExoClick is a Barcelona-based online advertising company, which provides online advertising services to both advertisers and publishers all over the world. ExoClick's customers include advertisers, advertising agencies, traffic distribution partners and publishers. ExoClick started in December 2006 and immediately opened t...
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".