There are a few Age Lock mods. The thing about it is members could be 14 and make their birthday 4 or 5 years ahead and still view "the goods". I got a site with adult content and HAD the age lock mods but decided to drop them cuz members can just change their birthdays to whatever. Your best bet to cover your own rear-end is to make an announcement that is a disclaimer saying you are not responsible for whatever happens. At least that's what oWc did