Russian social networking site Odnoklassniki.ru is launching a system of targeted advertisements, a source at Mail.ru, the owner of Russia’s second largest social network, said on Monday. Odnoklassniki has a potential audience of 40 million people. Liveinternet.ru statistics service says about 20 million people visit Odnoklassniki daily. Russia’s top social network, Vkontakte.ru abandoned media advertising […]