Brick is an Asian based advertising network. It provides simple applications to solve problems and to reduce a burden of Web marketing by cooperating with Google Analytics.
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
Open graph title entity tag
Sites who has this tag are verfied by google to use WebMaster tools