I've been using VKontakte for about 5 years now, and I can say it's one of the most useful social networking platforms for those who speak Russian, English, and other languages.
VKontakte looks very similar to Facebook, and offers the option of having a personal page as well as a vast number of creative and business and discussion pages. Those pages, which have thousands of followers, can offer ads services to others.
VK lets it's users save unlimited numbers of photos and videos, as well as load videos directly to VK.COM without using YouTube or any other external video upload service.
Also, there is an option to make Skype-like calls to other users, free (internet data usage is on you of course), and chat. In addition you can create group chats with up to 200 users, but they have to be added as friends.
VK has an option where you can add music tracks to your posts.