I think it could also be that whenever something pops up they don't like they review the entire site. If someone says 'Free Tibet!' on blogger and it gets too popular, they'll block the whole of blogger until they've got their targets down to specific blogs and pages, then they can unblock the entire thing.
IMO, if they're doing that, it's a very smart system of reducing dissent. I completely disagree with it, but then I grew up in a western country. I'm also not too ignorant to call China evil for doing so, they've made colossal strides in the past 50 years and perhaps in the long run this will be good for the country as a whole, potentially the worst thing that could happen is a civil war involving 1.3 billion people.
IMO, if they're doing that, it's a very smart system of reducing dissent. I completely disagree with it, but then I grew up in a western country. I'm also not too ignorant to call China evil for doing so, they've made colossal strides in the past 50 years and perhaps in the long run this will be good for the country as a whole, potentially the worst thing that could happen is a civil war involving 1.3 billion people.