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...
A pingback is one of four types of linkback methods for Web authors to request notification when somebody links to one of their documents. This enables authors to keep track of who is linking to, or referring to their articles.
Open graph description entity tag
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".
By adding rel="home" to a hyperlink, a page indicates that the destination of that hyperlink is the homepage of the site in which the current page appears.