I have a feeling the worst troll of the lot is an anti-British bigot anyway, because nearly all his victims are British. In that case, your suggestion might only make him more hostile than ever. Apart from that it's not a bad suggestion. :)
I've just heard from very reliable sources that the anti-British troll I refer to is in fact British himself. In that case, why would he be going around cyberbullying his fellow Brits? I've never seen that before on any website. It doesn't make sense to me.