Literotica is the best.
Literotica is one of the few adult websites that actually has people on it 24 hours a day, from all over the world. Its a place where you can meet someone and have a real interaction with them. I get invitations to join 3 or 4 forums a month. When I check them out, there is no one there. A post can go 2 or 3 days before it gets read by another member.
The erotic story forum is moderated and stories must meet minimum standards of readability.
The General Board forum is an anarchic discussion forum. There are no moderators. Anyone can say anything they like, just as long as they do not violate the forum policies.
If anyone had a bad experience on Lit, it is probably their own fault. You can't please everybody.