I'm believing that gradually, will may start seeing the inclusion of other social media signatures like Facebook, LinkedIn, medium, article, videos, blogs and many more,
The social media bounty making payment in BTC give social media bounty participants feels but the project owner appears to be interested in Twitter and articles campaign than facebook and the explanation behind is what I dont understand even with the scam activities done on Twitter.
With that been said, if some bounty manager dont upgrade their responsibility as a manager bounty scam may still exist.