Flaming - what is GNHQs approach to this?

I apologise for being far too easily tempted into replying to the 'flamers', but I do wonder if GN has any rules that apply to such posters.

A discussion on a thread, usually a politics one, can be bouncing backwards and forwards about the topic and then they turn up. There are only a few but you can recognise them by the way they never put forward an actual political argument. The most important thing they can come up with is personal criticism of either the politicians they have chosen as their target or the people who may be making positive point about the politics of that person or the party they don't like either.

This is not discussion but a deliberate attempt to inflame the thread in an attempt to derail the reasoned argument they don't like. On many forums they would be stopped from doing this. What, if anything, are GNHQs views on this. Surely, on a forum that has created a 'non-judgemental' space in the form of the café, we should expect flaming to be kept from disrupting other people's posts?