Can someone remind me where it's stated how our policies are applied differently for different namespaces, and how many of those differences there are? I'm pretty sure the rules for talk pages are different, but are there also significant differences between "project" pages and the main namespace (i.e. ns:0)?
(I ask because I'm becoming embroiled in a delightful -- not! -- tempest-in-a-teapot over proposed sweeping new policies for the Reference Desks, and one of the sticking points seems to be the extent to which core policies such as WP:NOR and WP:V should be applied there. But I mention this only for information; I'm not trying to extend the RD debate to this mailing list.)