Using Social Media Alone Does Not Work
BuzzSumo and Moz have done a really important piece of research and Rand Fishkin explains why.
I tend to agree with Rand’s assessment that social shares don’t mean people are actually reading your content. Time on page and real engagement is surely what matters the most in building links and (hopefully) improving your search ranking.
However, it doesn’t hurt to use social media and it should be part of your content distribution.