How to organize comments on the site from different social networks. networks in one block?

Question

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An example of the operation of such a module can be viewed on this site
. Comments from Facebook, VKontakte, Odnoklassniki, Twitter, LiveJournal, MoyMir are in a row. The structure is tree-like. Sorting - by the date the comment was added (all comments from different social networks are mixed). The comment looks like this: the author's photo, the social network icon, the author's name, and below the comment. In each lot or under each article and news, you can write a comment and tell your friends on your social page
. And after that, question number 2, the admin part:
All comments are collected in one feed (from newest to oldest). This feed is displayed in the admin panel of all administrators, editors and site managers who have access to the admin panel. In the admin panel, all new reviews, comments and answers to them are always visible (marked with a bold number). In this way, spam, advertising, and foul language can be tracked.

Answer 1

So if users can log in to your site through social accounts. networks.
You are creating a local user. And write down where it came from.
And then you already work as with ordinary users on the site who can leave comments.

Answer 2

You can use similar services (if your question is not about creating from scratch)
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