"Blogger Authenticity" vs. Presidential Campaigning

Amanda Marcotte left Pandagon to be the head blogger for the John Edwards presidential campaign. But now she's being attacked by right-wing bloggers for snarky comments she'd made earlier on the Catholic church; here is her carefully-worded (and laudable) response to the current blog-tempest in a blog-teapot. (I actually thought she was in the wrong on the whole "Burqa" blogspat issue, but that was a whole 'nother can of worms.)

The paragraph that caught my eye in the Time Magazine article on the pheneomenon was this one:

But bottling the lightning of blogger authenticity is not easy. Many blogosphere activists suspect anyone signing on with a campaign of selling out. And in the era of drum-tight message control, campaigns are not inclined to tolerate the independence bloggers need to maintain their credibility. (link)

Wait, do bloggers still have authenticity?