Honestly, if you're over 18 nothing about how you read changes. My fic journal has NC-17 content, and I now have the choice of: Trusting LJ abuse not to find out about it/trusting people not to flag me multiple times for inappropriate content (and it is, frankly, adult/porn) OR setting my journal as adult only, and having my cut tags and headers eaten by the generic 'adult/explicit material'. The flagging itself bothers me very, very little. The loss of cut tags, ratings, warnings - worries the hell out of me.