Well, they've just put a new note up on the homepage...
June 4th 2012 -- Notices: •Please note we would like to clarify the content policy we have in place since 2002. FanFiction.Net follows the Fiction Rating system ranging from Fiction K to Fiction M. Although Fiction Ratings goes up to Fiction MA, FanFiction.Net since 2002 has not allowed Fiction MA rated content which can contain adult/explicit content on the site. FanFiction.Net only accepts content in the Fiction K through Fiction M range. Fiction M can contain adult language, themes and suggestions. Detailed descriptions of physical interaction of sexual or violent nature is considered Fiction MA and has not been allowed on the site since 2002.
No word about summaries needing to be rated K, though...
ETA: Yes, I see it in the general rules that you need to consent to before posting a story, but they haven't mentioned it in their latest heads-up.
No word about summaries needing to be rated K, though...
ETA: Yes, I see it in the general rules that you need to consent to before posting a story, but they haven't mentioned it in their latest heads-up.