The posting guidelines for S&D have been posted for your convenience. Our regular S&D contributors and readers should recognize that this does not represent a significant change; rather, it is intended to prevent confusion. The one exception here is the explicit exclusion of conspiracy theories. Discussions of conspiracy theories have been allowed in the past, but they have always been a problem and almost always ended up as closed threads. Also, in keeping with the fact that PF is a place for science, we are and have always been interested in phenomena, not conspiracies.
This is posted in the feedback sticky above. I may fine tune things a little more over time, but this should cover things pretty well.