Hi!
Can you tell me, is there such plugins to leave comments in zenphoto via social networks for example - ok.ru, vk.com, facebook and plugin with ability to share foto from your zenphoto to socail networks?
Sorry for my english... =\

There are some social media related plugins:
http://www.zenphoto.org/page/search/tags/social

You might need to modify your theme to use those. And some are third party so you have to check if they are still maintained and working.