There are a handful of posts on this topic that have just disappeared, including some of yours Doc.  Did I miss a system revision?  It used to be when a post was moderated out, there would still be a notice left about not meeting civility standards.

Or are posts being removed - now with no trail of this happening - so readers cannot take note of how often commentary - often perfectly civil - is deemed not to be so by the system G+M has chosen to utilize?