I think it is very poor form of Twitter to be leveraging its power to hurt media outlets it doesn't like. I agree with Arrington: press likely to cover Twitter on a frequent basis should not be on the SUL.
It's quite interesting to see the leverage that Twitter can exert on TC now. I certainly hadn't expected them to have any recourse against TC from their last incident, but they have users that are the equivalent of mini-diggs now, and have many of them.<p>I'm looking forward to seeing how they wield this power in the coming year.