Reporting does not work always as mods just leave some of those as unhandled. Mods only care about post quality. If someone was hell-bent on conducting a smear campaign against you, and made a high-quality post, chances are they won't be removed. Regardless of how mundane the 'claim' turns out to be.
Mods only remove posts that violate forum rules. If someone wants to start a smear campaign against OP (or me for that matter), their reputation thread is the right place to do it. Let them, I'd say not being able to censor your own reputation thread is more important. It ensures your own integrity. Who cares what a troll says.