Why not call the company the check is drawn upon? Or notify the authorities? Mail fraud, bank fraud, internet racketeering... I'm sure some agency would be happy to check into it somehow, don't you think?
If no one helps track these people down, they will just keep doing it 'till they get some poor little old lady who doesn't know any better.
If no one helps track these people down, they will just keep doing it 'till they get some poor little old lady who doesn't know any better.