I read in the FAQ that spammers use tracking codes to track which emails are reported. I would imagine SpamCop receives many reports about the same spam message from different people. Could the differences between these reports be removed to produce a single report free of any tracking information? Would this still be useful to ISPs? What is the minimal amount of information a report would need to be useful? If it would still be useful to ISPs, producing reports where some information is aggregated would be a nice feature. It would give us something in between normal munged reports and mole mode and it might produce reports that couldn't be traced to a specific user no matter how a spammer tries to track their messages.