A bit hyper-ventilating, but much food for thought. I'm sure you remember how they rolled over Free Republic back during the impeachment wars. :-)
I'll say it again in a different way, it bugs the powerful people that before their words have quite finished there are a thousand people using search engines to check facts.
NPR had a group of six “uncommitted voters” in, I think, the 2004 elections. As soon as their names were broadcast, a dozen people used opensecrets.org to learn that the six were all Kerry supporters who had maxed their contributions, and this news hit “the blogosphere” they like to talk about. Embarrassing.
And how often does the “average Islamic man on the street” interview happen to be with the local director of a CAIR chapter? This gets online too.
Ending Web anonymity would allow those seeking more power to pressure the posters causing the most trouble (posting from work? Illegal email account?) until there were much fewer troublemakers, and many more “activists” spreading “truth”.