I believe that there is no reason to have an 18+ forum. Due to the fact that it would turn into a porn site. I believe that people shouldn't look at others unless it is their wife or what not. But that is just my oppinion. Also the fact that there are some people such as myself who haven't even touched a thing like that. Let alone the fact that there are some people who would be VERY upset with their relationship partner if they found out that they rather look at a porn site then them.
Though if it weren't porn and to just discuss religion and oppinions and such I say to leave it out for everyone. Everyone has a right for their own oppinion. But I also say that if a threat or an arguement were made out of a person's oppinion. That it should stop at the first sight. A thing such as "I agree to dis-agree." Would be good here. Also the fact that a GM would monitor it but only give out bans for threats only.
I still think it's a bad idea and personally I know I would be VERY upset with some people if they looked at others that aren't their relationship partner. I know some other people would be too. And if I found out that my boy-friend were looking at someone else besides me well that only sends out the message of. "I'm not pretty enough for him/her." And then it would cause the relation to have problems. Sometimes even friends will take it out of hand. A person liking someone that looked at someone else instead of them makes their self-esteem go down a whole lot. Even if the person were exploting them-selves it's still wrong in my oppinion.
So I don't see a reason for it at all. I'm voted no.