Interesting question there ice master, thumbs up for raising it.
Currently we have a listing in the database for adult games xxx, so the genre is specifically mentioned on each entry, plus usually the descriptions will note that the games contain a sexual theme too (I recently did this for the new entries on Inheritance and Wanton cove, as well as for the expanded entry for Flexible survival).
For the forum, people have usually been sensible enough to mark any topics related to adult games as such, so it's not been an issue up to now.
In general, especially speaking as someone who had to manage serious genophobia for a very long time, I prefer to try and just give visitors the maximum information about what is available so that they can make their own informed choice, than attempt any kind of automated restriction system with age profiling and the like, after all even if someone does! tick a box to say they're of age, there is no guarantee they're telling the truth, and of course you do have the converse occasionally, where a person of less than legal age is of sufficient maturity to accept adult content, especially given this is an international forum and attitudes about what is and isn't appropriate for r a given age change from culture to culture, and even from individual to individual within the same culture.
Of course giving someone the appropriate information about what games etc are and expecting them to be sensible is predicated on the notion that anyone browsing this site alone is compitant to do so, but hay we're not people's parents or nannies or the like, we provide information, what people do after that is up to them, we can just insure that the information we provide is as clear as possible.
The only change I would like to see, is some way of marking topics on the forum that refer to adult games, so that someone doesn't stumble onto the likes of Flexible survival or tripple J shooter by mistake.
of course as I said, when such games are referd to, the posters are usually careful enough to make sure people are aware the games have a sexual adult theme, but having a mark for the topics might be an extra safeguard against people who click without reading .
With our dreaming and singing, Ceaseless and sorrowless we! The glory about us clinging Of the glorious futures we see,
Our souls with high music ringing; O men! It must ever be
That we dwell in our dreaming and singing, A little apart from ye. (Arthur O'Shaughnessy 1873.)