Twitter me this

I've finally signed up for Twitter, primarily because I expect to leave the country in a little over a week and be in China in a little over a month. I am interested in how difficult it will be to evade the Great Firewall of China, particularly given the current state of blocking there.

Nathan Freitas is both a social activist and a programmer and I have been following his blog for applications to install on my Google Android mobile. He addressed a Congressional hearing on new media called "Twitter against Tyrants: New Media in Authoritarian Regimes" last October and was a participant with Open Mobile Camp in November.