How do campaigns work? Can the posts be about anything and can you be part of multiple signature campaigns? How do I get paid for it?
I think you are saying about bounty campaign. every campaign has it own rule. You can do campaign by following the rules. You can ask about some wallet like MEW, btc wallet, waves wallet for getting you payment after ending the campaign by its rule. You just go to the bounty section and open some campaign you will find every answer of your question.