Daftpunk - I could understand your concerns if this were just a chat forum, the likes of which you get on Yahoo. Course I'd be unhappy if my dh posted in chatrooms. The kind of people who generally use chatrooms are those looking for relationships of one form or another.
However this is a parenting forum. So generally the people who post here are posting from a parent's perspective. Men as well as women. If they wanted to seduce you, do you really think they'd choose Mumsnet to do that? There are loads of chat rooms on the internet for them to choose from.
Did you know that some women posters on Mumsnet don't have children? Does that mean they should not come into this forum too?
I think it's great that men do take an active role in parenting and are open to advice and suggestions. Confident enough even to post advice themselves.
You seem to mention UQD posting on the breastfeeding topic, can I ask you honestly, do you think he's getting a kick out of that? Is that why you keep bringing it up? If it is, that's a really perverted way of looking at things. UQD is a long-time poster of Mumsnet, a dad who wants to support his wife in breastfeeding. Please don't tell me that your mind is so closed you think he has an ulterior motive?
I don't know what else I can say to you. You've made up your mind that any man who posts on Mumsnet is clearly after something. This, you say, is based on your dh. Well that says a lot about your dh.