5P, or P5, stands for "Posse for the Prevention of Pedophilia and Pure Porn", or alternatively "Panel to Purge Pornography, Paedophilia and Perversity", or perhaps "Panel Preventing Perversity, Pornography and Paedoshit". You know what, no one's really sure anymore.
The currently active members are Adannor, Dr Psyche, JHM, Harmonious Fusion and Discar. All have been chosen because they have shown the necessary maturity and understanding to be trusted with the task of assessing works carefully and fairly in order to determine whether they meet the standards expected here at TV Tropes. Also look at the content policy for an idea (not a hard and fast policy outline) of what this wiki will not be tolerating. Please don't try to Rules Lawyer around cutting a page based on these guidelines—the panel will call pure porn, pedo-pandering, and other perverse things when they see it.
Please do not PM the members privately about their efforts. Use the following platforms instead:
The list of votes made by the panel can be found on this page. For the final verdict on certain works, look at this stickied thread. Links to the discussions about works are in this thread for those who are curious.
Look on the left-side drop-down menu under Tools if you want to flag a page for review. Observe the rules given in The Content Policy and the 5P Circuit especially "What we want flagged and what we don't want flagged", or else your flag will be removed or even banned.
That page gives also other info about the policy. It's also summarized in this thread.