I have following segments on my site
I have created corresponding groups on Facebook and added thousand plus members in each. I usually add members on daily basis and some are joining voluntarily.
Whenever I or members post on the site http://thatsme.in these posts are shared in respective groups on Facebook.
This way ore than 50% visitors are coming to the site from Facebook. I think this tip will be helpful for sites with smaller number of active members like that of mine. I have thousand + but hardly 50 are active.
Leaders are requested to guide me how can I make the rest active.