Okay, what exactly are they trying to do here? And what do they mean by child abuse websites? Do they mean child porn? I got a better idea, why don't they track these sites down and nail the administrators and all others affiliated with these sites to the fucking wall. Besides, this kind of content is more likely to be distributed by the P2P networks, not through HTTP, which is what they will be blocking. These assholes are cleverer than that.
Then you have this problem, any and all sites who disagree with the government could be blocked because they are a "child abuse site" and someone could try to confirm this, but the sites blocked. Okay, that's a bit slippery slope, but if you ask me, freedom of speech must be absolute, there's no reason for it not to be.
This is simply a bad idea, I don't know how else to put it. Though if I had to guess, I'd say they're probably doing this by messing with their DNS servers, which could be easily worked around by using OpenDNS.