You can have your cake, you just can’t eat it. That is, with AT&T, you can have broadband, but you can only use it to web surf, no USENET, or P2P, or to transfer IRC binaries, or any other high bandwidth use. Probably even restricts VoIP.
So, in other words, you could save yourself a nickel a month and get NetZero dialup, to do about the same thing.
About as useful as MS Vista Basic on a computer with 256mb RAM.
I assumed there would be no Usenet access included in this plan, but are you saying a third party Usenet provider or P2P sockets are blocked ?