As some of you may already know you're allowed to call transgendered women "men in dresses" and refer to them as "he" and "him.
"So some men dressing as women..." as one posted said in relation to trans women got the reply from RebeccaMN:
We agree that this post is in poor taste but we don't tend to delete on those grounds because it would be really hard to know where to draw the line.
The truth is, we don't think we should be the arbiters of what people should find offensive and what they shouldn't. In these instances, it's very rare that a tasteless comment is left unchallenged, and we would highly recommend that you put forward your point of view on the thread.
Well firstly I think Mumsnet should draw the line at discrimination of a protected minority group.
Secondly, if MN don't think they should be the arbiters of what people should find offensive, maybe they should ask a representative from a human rights or anti discrimination group? Misgendering is always wrong.
Thirdly, is it rare an tasteless comment is unchallenged? Now the trans people on Mumsnet refuse to post on trans related threads who the hell is going to challenge them?
Fourthly, that post was unchallenged. Have a look at the thread.
Fifthly, "tasteless"? "TASTELESS"?! WTF? Tofu is tasteless. Would MNHQ describe calling people spastics or coons or faggots as tasteless? Misgendering is a put-down towards an entire minority. Dismissed as tasteless. 
A quick look at a quote about the 2010 equality act:
"harassment - unwanted behaviour linked to a protected characteristic that violates someone’s dignity or creates an offensive environment for them".
Is there harassment in trans related threads on here? Is the dignity of all transwomen violated by referring to them all as men in dresses? Bleedingly obviously yes. Does it create an offensive environment for them? How the hell could it not? Does Mumsnet do anything to stop it? No.
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It all makes me wonder if the people of MNHQ are deliberately letting all this unkindness and discrimination and harassment go on because they evil, or because they don't know any better.
I think I have it. I reckon it's like the Ricky Gervais thing where he started doing "Mong" faces. All kinds of people told him it was offensive and an unkind name for people with Downs Syndrome but he refused to accept it. I think he thought that as he believed himself to be a good person, and he used the word mong, that mong had to be an acceptable word because he was good. I think it must be like that in MNHQ. They believe themselves to be good people and when they allow people to call transwomen men on thier site it's fine because their belief in themselves being good trumps all the views of the victims.
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One question for MNHQ that I alluded to earlier. Have you ever asked any kind of trans, human rights, or anti-discrimination group about how to treat trans people?
Have you?
Ever?