Thanks for posting this - I'm off for China for two weeks at the start of October (first leg of my world tour) and was concerned about the situation with the 'great firewall of China' and how it would affect my ability to contact home.
Looks like all should be fine with the exception of Facebook and Twitter!
The only thing that can make you think you'll be fine with Facebook and Twitter behind the GFW is tor.
If you are ok with the owner of the exit node being able to snoop your credentials then that's fine.
As far as lists of N things go, this was pretty interesting.