This is just wrong. I don't think other providers will follow. AT&T will probably start losing customers because of this and people will go with other providers. When the other providers realize this, there's no way they will follow with this. of course, if nothing changes, the other providers might go with it. But isn't that kind of pointless again? If all providers would block a specific set of sites, nobody would be able to access them. I wonder if they can be sued for that, something like restricting the freedom of speech.