Just catching up on the blogosphere from my hotel room at the Kerry Centre in Beijing. Unfortunately I can't read various specific blogs. Other web addresses seem fine, my Bloglines reader is accessible and I can read postings in the blocked blogs through my subscriptions at Bloglines. What the blocked blogs have in common is they are all hosted in the blogspot.com domain, i.e. they are run by Google using software from their acquisition of Blogger.com. Blogger.com (the software) is reachable but any reference to blogspot.com (the blogs) times out.
I knew there were problems in 2002-2005, but I thought China had gone to more fine-grained filtering of individual blogs, allowing access to the rest of Google's Blogger service. Of course I haven't paid a lot of attention - I'm only in China every couple of years - but I do skim Rebecca MacKinnon's RConversations which provides good coverage on censorship issues. However, Rebecca's recent discussions have focused on search engines kowtowing to the Chinese government, not wholesale blocking of blogspot.
The other thing I notice that different from 2003 is that all the readily available web proxies - those you can find with a simple Google search, even those that require a human to type a password - also appear to be blocked. Finally, the Google secure VPN client which I used once a few years ago, is now only available at a few locations in Mountain View.
I don't have a lot of time right now and I'm off to Singapore tomorrow, so that's it for experimentation on this trip.