Ah... I try to do the clean ups via reporting.. For an account my size, I too terrified of potential retribution... Most of the plagiarists are small... But you never know what is lurking behind.

Anyway, I was thinking about this recently... Most of the large curation accounts (both auto and human managed) are often too happy to give out upvotes... But when reporting is done, they just blacklist or remove the vote (if they do anything at all!). This creates a no loss incentive for scammers... I really wish that those big accounts would do something similar and save a flag of two for punishing verifiable bad behaviour that is exploiting their curation...