interesting but unfortunately I still don't really understand about social mining and also some of my friends on Twitter follow social mining but when I asked them about this they also didn't understand the system, maybe I'll learn first and try to join social mining.
Its the same with bounty campaign. But the social mining is happening on specific platform of dao. If Im not mistaken openpredict is a member of makerdao so i guess this will be a good activity. The budget seems to be low but for active participation of quality user they can benefit a lot from this.