Will Beback wrote:
[[Wikipedia:Verifiability#Self-published sources (online and paper)]] (AKA WP:SPS) prohibits most uses of self-published sources. It allows two exceptions: we may use the self-published material from previously-published individual who are recognized experts in the field (a contrversial addition) and we may use self-published sources in articles about the subjects themselves provided a number of criteria are met. My proposal would add another limitation to the existing exceptions.
The problem is that the limitation isn't particularly coherent, because whether a source is reliable or not is a completely orthogonal issue. If michaelmoore.com had never harrassed Wikipedians, it would not have been any more or less reliable as a source about Michael Moore's views---that incident has precisely no effect on its reliability (or unreliability) as a source.
It sounds like what you want is a rule that certain types of sources should not be used due to concerns *other* than their reliability. So why not say that?
-Mark