As to what other people say in Xiaonei, which is a site I'll visit everyday, many people there are complaining about the network censorship in China. On the other side, it's also a site censored by the government, which means users' comments, blogs and updates will soon be deleted if they contain illegal keywords. It doesn't allow free speech at all. So what you see may not represent the majority.
On the other hand, many of us has access to twitter, using SSH tunnel/API/proxy or something else to jump over the wall. And what you see on twitter may differ greatly on what you see in Xiaonei. Sorry for my poor English :P