I'd be really interested in seeing a list of ISPs that have chosen not to sign. Even though I don't pirate, I would jump in a heartbeat if its feasible (e.g. I can actually find a non-signed ISP) and my ISP isn't on the list.
I live in San Francisco and chose Sonic.net because they don't cap or do any kind of traffic shaping. I did take a hit in my speed (from 20mb to 10mb), but their service is top notch and I feel good about where I put my money every month. Sonic's also been doing a fiber rollout in some areas north of SF and in one section of the city.
I won't ever go back to Comcast. I'm interested to see how this will affect people. Will there be an exodus from these guys for other ISPs that don't cap or police the line?