Okay guys, this is the best idea I can come up with and I think it's good. Read it and have a think - I don't think that this needs to be drawn out into another long discussion - I know a lot of people are getting sick of it. After this I will not put forward any more ideas - I think that time has passed anyway.
Here I go:
I think a real issue is what these new proposed forums will be called. We can't exactly name them Adult (immature) and17 Adult (mature), or Adult (sex) and Adult (no sex). It's all in the name.
I'm in favour of a 'Women's Issues' forum (for serious talks on preganancy, menstruation etc.). Correct me if I'm wrong, but I think that men have been pretty good in the Women's Forum thus far. They are polite and respectful if making a topic there, and the majority are well behaved from what I've seen. I also think a Men's Issues forum would be a fair idea, but wonder if it would get enough numbers.
For all the less-than-serious topics, whether they be 'adult', 'men', 'women' or whatever, I think we need a new forum to accommodate these. Sort of an 'Immature Mature' area, or just a free for all area just for adults (within boundaries of course). Here you can talk about sex, drugs and everything in between.
Then, you can create another separate, more structured, in-depth environment that people are asking for. This area would need to be moderated moreso, to ensure that the topics and discussions stay on track. I propose a serious discussion and fleshing-out of the posting rules for this place and agree upon them before we do anything. We need solid foundations if it is going to work.
This way, the division amoung adults wouldn't be based on age, but rather their maturity and interests (I'm 18 but would like to participate in some good, serious discussions, for example).
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"Pray...NOW!" -Auron, before Bushido attack