This had been requested and discussed so much before.
We won't be adding an 18+ section to the forum, there isn't any real need for that kind of section on here and there is no fair way of moderating who gets access since there's no way of proving for definite what a member's age is, it could possibly split the forum up into age orientated groups/cliques and also be pretty unfair on the younger members.
This is why the 18+ social group was created.
I do agree with you about the influx of sexual threads lately though, I see no need for them really on a BB forum where we have members as young as 13 amongst us, in fact some of the threads make me feel a tad uncomfortable and I am far from prudish but some must feel the need to discuss those sort of things so I would say just don't read the threads
I might actually start removing the more graphic threads actually.