As the title says really.
Some commenters can offer advice, support or submit their differing opinions and move on.
But more over there seems to be a lot of people hell bent on destroying the original posters. It doesn't seem to be a constructive environment for discussions to take place.
I have seen alot of posts today where OP has posted something, some people have given opinions and others have focused on one minor detailed and been passive aggressive about everything and just not picked there way to an argument with OP and when OP has relented Mumsnet have closed the thread.
Yet do not seem to stop these relentless mums betters who are clearly just commenting for an argument rather than giving their opinion.