hello, I want to know from people who have been working in bounty projects for a long time. how quickly and effectively to gain a lot of subscribers in social networks. And with how many subscribers does it cost to work in the bounty? 
Twitter:First of all you need to make hashtags (#Followback#crypto #bitcoin, #following, #followme), next step you need to follow everybody with these hastags.
Next you must download any application on browser, for example "Mass follow for Twitter" , then try to invite everybody with mass follow.