How to organize a like system?

Question

JavaScript

Greetings.
It is necessary to organize a system of likes, but in such a way that with the publication in social networks?
How would you do this task?
Sincerely, Alexander.

Answer 1

you can make your own design of likes from social networks, but there are crutches in the garden ...
You can use ready-made services that these crutches have optimized)
take the same ball from Yandex.

Answer 2

And why not take the ready-made API of these same social networks, or do you need a centralized one?