Do you want to get rewarded for good flags? I got something for you. I think this project has massive potential to help promote policing of the blockchain. Your feedback would be appreciated.

https://steemit.com/flagging/@steemflagrewards/steem-flag-rewards-progress-report

Sorry for piggybacking but I do feel that this is relevant to the problem you stated. I want to make it more profitable for you to fight spam. :)