It never made sense to me that China would block blogspot without blocking the dozens of other blogging sites. Perhaps it had something to do with blogspot owner Google's unwillingness to play ball with government censors as yahoo had done in notoriously releasing the name of a blogger to the government; but has Google's policy changed?
In fact, that's the worst thing about the censorship: we don't know. The censorship is so random, and it's so hard to know what will be censored, or why or when, that it feels almost calculated to be random. That of course creates the sense that the government has a wide r reach than it really does, and generally messes with your head. You'll never know what site will be blocked, because the government's always on the move, always got its eyes out.
It's the internet version of Foucault's panopticon: power all-visible yet always unverifyable.
... the major effect of the Panopticon: to induce in the inmate a state of conscious and permanent visibility that assures the automatic functioning of power. So to arrange things that the surveillance is permanent in its effects, even if it is discontinuous in its action; that the perfection of power should tend to render its actual exercise unnecessary; that this architectural apparatus should be a machine for creating and sustaining a power relation independent of the person who exercises it; in short, that the inmates should be caught up in a power situation of which they are themselves the bearers. To achieve this, it is at once too much and too little that the prisoner should be constantly observed by an inspector: too little, for what matters is that he knows himself to be observed; too much, because he has no need in fact of being so. In view of this, Bentham laid down the principle that power should be visible and unverifiable. Visible: the inmate will constantly have before his eyes the tall outline of the central tower from which he is spied upon. Unverifiable: the inmate must never know whether he is being looked at at any one moment; but he must be sure that he may always be so. In order to make the presence or absence of the inspector unverifiable, so that the prisoners, in their cells, cannot even see a shadow, Bentham envisaged not only venetian blinds on the windows of the central observation hall, but, on the inside, partitions that intersected the hall at right angles and, in order to pass from one quarter to the other, not doors but zig-zag openings; for the slightest noise, a gleam of light, a brightness in a half-opened door would betray the presence of the guardian. The Panopticon is a machine for dissociating the see/being seen dyad: in the peripheric ring, one is totally seen, without ever seeing; in the central tower, one sees everything without ever being seen.
(Also see Rebecca MacKinnon's good post on human rights and the Great Firewall.)