Simple, my girlfriend is from Ukraine (ZP)
VK has a great English translation so language isn't a problem and the site in general is light years better (for our taste) than fb.
Not sure about that user info.. according to their data: Audience
Over 190 million users are registered on the site.
Around 2 500 000 000 pages are opened daily (LiveInternet).
Around 67% of visitors live in Russia (LiveInternet).
More than 70% of users are over 25 years old (comScore).
Love your work.
We're from DP, 2 hours away
As for VK, I feel that people over 25 don't visit the web-site that often, compared to younger people. Audience is interested in something extraordinary these days, so to please them pictures should really stand out of the crowd.
We've got interesting results during this year wedding season, so I'll add you to my friends list in VK to share those as soon as we have time to upload them
You have very nice works too, but I believe there's always room for personal growth