As far as I can work out the rules of KF are ‘say what you like, but don’t complain if we end up coming after you’.
Basically, anything and anyone is fair game, as long as they are pisstake-able.
So it should be fairly easy to adhere to their talk guidelines 
I did a search for ‘Mumsnet’ on there, and they have always been (begrudgingly) respectful, even before the recent crossover. Their thread on the NSPCC livechat debacle is a thing of wonder.
I absolutely love the word ‘terves’, by the way. It follows standard English rules (nouns that end in f pluralise to ves, so dwarf/dwarves hoof/hooves etc) whilst subtly making the point that T**F has long ceased to be ‘just a factual acronym’.
I don’t know where it originated, but I learned it from lurking the farms.
In other news, I notice they used to dislike Glinner (dating back to something Gamer Gate related) but posters have recently observed that it looks like Glinner and the Terves called it correctly.