Notibly, if you type in "Tibet" it is replaced with "great province of the People's Republic of China" and "America" is replaced with "Capitalist Pig".
The forums have also become moderated, as you are greeted with the following message:
Please Observe This Message from the Ministry of Communication.
Your personal information, associates, and past activities are currently under review by the State Council Information Office.
You will be able to post in Communication Forums once you have been cleared. Until that time, please submit all comments to user pages.
Also, please note what others are saying about approved activities and non-inciting discussion.