Are links from Facebook, Pinterest and Twitter considered as relevant back-links?

[makoo]

Are links from Facebook, Pinterest and Twitter considered as relevant back-links?

[jayam]

Turbo charge your link building with these 28 awesome social media backlinks that you ... Social signals and backlinks play a role as a ranking factor and let's be honest ... Yes, you have a website field on your Twitter profile. ... and images to Pinterest as if you would be doing it with an article on Facebook.

[neelseowork]

jayam,
will you please answer to the question instead of posting irrelevant answers!