Oh Katie Hopkins was the one that shagged some married man in a cornfield and looks like a horse chewing a wasp!!!!
As for the nastiness - it is normal at certain times of the year - you get this many women spending sooo much time together (RL or not) and their cycles begin to syncrhonise so they are all PTM ridden at the same time.
Mumsnet isn't much different, I don't think, to how it has been for the last 6 or so years that I have been here.