Content is king so if one wants to rank higher in social media then should share and respond more and more, in what audience may be interested to read and participate in it. Sharing something good, interesting, funny, inspiring or controversial will surely increase reach of a page. Well, creating such buzz takes some time. I don't think practically there is any specific strategy to it but yes periodically sharing something good, at regular intervals will help to increase reach to more and more people. Blog commenting and forum replies are very helpful in gaining traffic to your sites.
I use Sociota to manage my social media accounts.