They should probably do a complete overhaul of who is on the campaign. Remove everyone and start again and only accept users who make decent posts. Accepting everyone and anyone is just asking for trouble and it will quickly be abused as it has been. It's much more beneficial to have a handful of quality posters rather than dozens or even hundreds of low quality posters.
This will end up being a waste of time as long as they don't hire a proper manager. That's the actual cause of the problem.