Do social widgets help with SEO?

Question

Facebook

Gentlemen, there is an exciting question. The publication of links to the site in statuses (for example, VKontakte) adds the number of links in search engines to pages, or all the benefits come down to the meager amount that came directly from the links from the social network.
And in passing, I ask you to express your opinion on the appropriateness of social widgets (likes, comments, etc.) in general.

Answer 1

I guess I will express the general opinion - you should not ask such a thing here. I'll leave my mats with me.