So they’re going the freemium route in 2010, it seems.
I think the described featureset makes sense — if you’re a large company that requires a lot of technical feedback and support like Comcast, Twitter as a support mechanism can become unwieldy quite quickly, so a UI that helps manage this inbound traffic would be of great value. Additionally, for these companies and a lot of smaller ones, having good statistics around your use of Twitter, your reach, etc. will probably be worth whatever fee is charged.
Who is this bad for? Social media monitoring tools.