VK (originally VKontakte) is the largest Russian social network. It is available in several languages, but is especially popular among Russian-speaking users, particularly in Russia, Kazakhstan and Uzbekistan, Ukraine, Belarus. Like other social networks, VK allows users to message each other publicly or privately, to create groups, public pages and events, share and tag images, audio and video, and to play browser-based games. VK is often described as Russia’s Facebook. Here is awesome VK photo application concept based material design.