Must confess to being an infrequent poster. Just saw on Wright Stuff, ch5, Matthew Wright saying mumsnet is basically cliquey, bullying etc (paraphrasing). This was on the subject of getting children to apologise.
He does this all the time. MN is a standard target for him. Doesn't mean, of course, that these things don't happen here as on any internet discussion forum, but I wouldn't take him as an authority on the culture of Mumsnet. Stick around and find out for yourself!
LaVengeance I also have a sneaky liking for it. I try not to take the MN / any other stuff that annoys me personally as I can see that his trick is basically to play devil's advocate with everything.