VK is one of the biggest social networks in the world (founded in 2006). It is also known as Vkontakte, what is translated as InTouch. Vk counts more than 270 users mostly from Eastern Europe. According to Alexa statistics it's the most frequently visited site in Ukraine and Russia. This social service allows you to do all type of online social activities such as: send message, publish status on wall, upload photos or videos, search friends, like someones activities and so forth. Apart from these, VK offers some additional extra features: listen to thousands of tracks or play in-browser games. If web browser isn't enough for you, then you can use clients on any types of mobile devices.