Commenting on other's posts is the most powerful way to connect, in my opinion. You know that Facebook Like button that glues the users to their screen? There's a reason for it. People are social creatures who yearn for recognition and seek approval from others. So, when you comment on someone else's post (after reading it, of course), you're acknowledging their work and expressing your opinion about it.
This is the most powerful tools to succeed ,who does not like good compliment.
Thanks great stermian.