internet - Typepad seems blocked

The webhosting service typepad seems blocked in China. A few people asked me to check it earlier today, but since the services was having major problems because it was moving from one data center to another, I first believed that could explain access problems.
I checked this evening again and noted that the signal of typepad weblogs stop at the level of the backbone, so this could be a real IP-address blocked. Visitors in China should get their proxies in place to visit those weblogs.
After the earlier block of wikipedia, I start to see a very new pattern. The blocking seems to have been automated: how else could a new block occuring in the weekend be explained. Since nobody knows for sure what is triggering off the block, it is also hard to find a way to avoid it.