There's nothing like a little Guilt-by-Association Red Meat to bring the anti-Obama crowd back to the comment boards. Hundreds of posts have found their way to various articles on washingtonpost.com and elsewhere about the dramatic arrest yesterday of Illinois Gov. Rod Blagojevich for, among other things, allegedly trying to sell the Senate seat vacated by President-elect Obama. Federal prosecutors said without equivocation that there is no evidence of Obama's involvement in the matter, but the noisy anti-Obama comment crowd stirred from its post-election silence to fire away. Because, as Michael D. Shear and Chris Cillizza wrote, "the conspiracy allegedly dreamed...