No doubt you don't need anyone to tell you this, but I wish SP folks realized that the places to advertise their book are not 1) editors--since if it's already published they don't need an editor (see http://editorialanonymous.blogspot.com/2008/02/dont-spam-editors.html), 2) agents, since you can't rep a book that's already been published, and 3) boards for writers to discuss craft and traditional publishing. SP is not for me, but maybe a few pointers on where it IS appropriate to plaster your ads would be helpful to those who want to do it?