As it gets harder to keep track of sites that get censored, tagging them might make for an easy archive to go through. This one is for China. So you could tag sites/ blog with GFW (Great Firewall of China).
Sad thing is, once the government gets the wind of it, they’ll probably block access to the tagging site (Technorati, Del.icio.us), so it’s people who are not blocked by the firewall who end up accessing the information. Technorati for a start appears to be blocked in parts of China.