Some really good points raised on this thread.
I have voted for both sections, BUT, probably not for the reasons originally envisaged.
1) As Tree has pointed out, the demographic of the forum has changed substantially since it's inception. I am another one who does not post or browse as frequently as I used to, since the general conversation has changed a lot.
2) The userbase is so large now that the sheer number of posts in GC means that it is impossible to read them all, and I am finding I am missing posts that I would otherwise have been interested in. As Tree says, they can dissapear of the first page within hours sometimes.
By separating GC into age brackets, the number of posts in each will decrease to a more manageable level, and additionally the posts will TEND to be in the interests of those in that age group.
However I think people should still be free to post in whatever group they wish, whatever age they are. I can certainly understand teenagers feeling annoyed at being treated like "children" and barred from adult conversation, and I can also see the older ones dipping into the younger forum to give advise or just get a fresh persective on things.
I'm not sure that having "exclusive" areas to the forum for reasons of adult content is a good idea. For one, those under 16/18 are going to feel left out and marginalized. Also the "adult" section will either become a repository for "smut" which I can see Adele is concerned about, or it will become a "haven" for the older ones and the younger ones will start missing out on their input. I think all areas should be open to all.
I am not sure what to suggest about "inappropriate" content. On a personal level I found nothing remotely offensive about the recent controversial posts, but then my personal opinion is irrelevent since we all have different values. It seems obvious that pornographic material has no place on a rabbit forum, but the occasional "naughty postcard" type humour is part of adult life. If such posts had been made in an "older" group, then perhaps there would be fewer complaints because such banter would be expected.
If parents are concerned about children reading such things, then they could simply tell them to keep to the younger group. Of course they can ignore such rules, but at least then the parent has no right to complain when a topic is clearly in the older group. If children want to access inapropriate content against their parents wishes then nothing is going to stop them.
One of the bodybuilding forums I post on has seperate general sections for "Teenagers", and "over 30's". Although this is primarily for the physiological differences between age groups when training, it has also worked very well as a grouping for general discussion. There is no restriction on posting, and all age groups tend to dip in and out of each other's areas, but the general tone of the groups is different.
I think the naming is perhaps better than "16 and over" because that by definition tends to make you think of innapropriate content, whereas it should be purely a social grouping.
Blimey, I've rambled on a bit! Soz!
<gets back to work>