Hi everyone here

how can proofofbrain get rid of cheaters in the communiy

I don't really know what you mean about cheaters but to get rid of users who Plagiarise thier content action is already being taken severely by @scholaris.pob.
One other form I Know is that some goes to some length to open multiple hive account in order to receive more upvote and transfer thier pob there though it's not against pob rules and regulations and not cheating but the best way us that in curation,they should consider your pob selling, transferring and staking rate before curating those account for the development of pob community.