Almost every day over the past six months, I have been the recipient of an email that attacks Obama's character, political views, electability, and real or manufactured associations. The original source of many of these hit pieces are virulent and sometimes extreme right-wing websites, bloggers, and publications. But they aren't being emailed out from some fringe right-wing group that somehow managed to get my email address. Instead, it is Sidney Blumenthal who, on a regular basis, methodically dispatches these email mudballs to an influential list of opinion shapers -- including journalists, former Clinton administration officials, academics, policy entrepreneurs, and think tankers -- in what is an obvious attempt to create an echo chamber that reverberates among talk shows, columnists, and Democratic Party funders and activists. One of the recipients of the Blumenthal email blast, himself a Clinton supporter, forwards the material to me and perhaps to others.