VK is a popular social network in Russia, covering 80% of Russian internet users. It is mainly used for communication through the newsfeed and profiles. VK has a large mobile audience of 30 million users and is the top mobile app and website in Russia. Advertising on VK allows businesses to target specific audiences through formats like display ads, communities, apps, and video ads. It provides tools for listening to brand mentions, representing brands, and finding targeted audiences through a variety of filters.