LiveInternet - крупный сервис дневников и сообществ, авторитетный сервис статистики для сайтов.
Mail.Ru Group is the largest Internet company in the Russian-speaking world and the leading Internet company in Russia, based on global monthly unique ...
A family of standard web feed formats used to publish frequently updated information like blog entries, news headlines, audio and video.
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
A canonical link element is an HTML element that helps webmasters prevent duplicate content issues by specifying the "canonical", or "preferred".
A scheme.org entity that represents an organization such as a school, NGO, corporation, club, etc.