VK.com instead of Facebook

Hi everyone. I`m a newbie, and I`m from Russia, so please sorry for my English and silly questions, but I really need your help - I`m a little lost right now..

My question is - does anyone have worked with Russia? In our country, facebook is well distributed, but it's nothing compared to the proliferation of such social networks as vk.com, also known as vkontakte (translate: in contact). Each and every person under 27 years registered in the network, it has really useful and attractive design and functionality .. but at the same time, it`s poorly regulated. A lot of fake accounts and spam.

Can anyone have any advice for working in such conditions?

And yet - even with what is best to begin by working on social networks with a small budget?