What methods most of the users in OC follow to bring in their referrals ?
they intimate their friends about the site & its features and thus one can have as many referrals as possible.
And the other one can invite their friends if they like the site.
introduce you share on social networks
yes social media is one of the good option.
Currently I am only referring to those closest to it, because it can make sure in advance whether he wants active or not and easier to guide them