This never really occurred to me until Chroot's reminder in the locked 'Purpose of PF' thread that the US Constitution holds no sway here (and bravo for that). It did make me wonder just what standards do apply (on a cultural basis, not a scientific one). Of course crackpot theories won't be tolerated, but where is the line drawn for things that are acceptable in some cultures and not in others? For instance, I noticed that a thread relating to weed was shut down, even though the OP specified that he was in Amsterdam, where it's perfectly legal. Many cultures are polygamous, so what happens if someone posts a question about friction between two of his wives? I hope that everyone knows that PF is my home-away-from-home, so I'm certainly not offering criticism as to how it's run. This is purely a matter of personal curiosity. So far, it seems to be based just upon common decency toward others, which works very well for me, but I'm a bit curious about how those standards are arrived at.