MySpace can be accessed in China because there's very little Chinese using it, at least not using it to do anything the government dislikes. On the other hand,

MySpace can be accessed in China because there's very little Chinese using it, at least not using it to do anything the government dislikes. On the other hand, Facebook, Twitter and Youtube are totally inaccessible. Take DropBox for example. At the beginning, there is no problem using it. But when people found out they can publicly share documents there, it was blocked. Now you can still use it as a backup service, but public sharing is not available.