For those Americans who are concerned about all the Chinese characters published by mainland Chinese people, I just wanna explain this phenomenon by translating couple of most commons by the Chinese.
1, I'm the first here. (sofa)
2, Lucky for me, still space for me!
3, Leave my name here before G+ is being blocked again.
4, Free us. We want freedom.
5, Could you give me green card?
6, Mr. President, we want to vote too. (They don't have the right to vote in China)
7, Good morning/afternoon/evening.
8, Free Chen Guangcheng, Free Liu Xiaobo (They are political prisoners for fighting for human rights in China, Liu won Nobel Peace Prize)
9, Chinese people need your help
10, I'm here to see the comments
11, Hello, president! Byebye, president.
12, When are you fighting the Chinese dictatorship? I'll show you the way!
13, I'm so late. You guys are so early, don't you guys sleep?
14, Tear down the Great Fire Wall for us! We want the truth.
15, The first time commenting on a political leader's posts. Our leaders are so scary.
..... and there are a lot more like these irrelevant posts, you can see they are like spamming President Obama's posts but they are innocent and friendly.
It's very hard for Americans to imagine, what's the point to post something like "hello" on a post which is supposed to have a discussion on the issue. But as in China, on all the media all the information is regulated by the government. Rarely you see any posts related to freedom or democracy, because all the posts that government don't like will be blocked. As such, people find a way to express themselves using two word "You understand". It's like that, without any relevant posts and their discussion is over. Because they can't have so much chance to discuss anything serious about their Chinese government.
G+ is now working sometime in mainland China recently. Many Chinese people have a chance to express themselves. Because it's just a start, it's like you just got out of Jail, even though you have so much important things to do, you still can't help to breath the fresh air first. Like what Tim Robbins did when he escaped the jail in <The Shawshank Redemption>, he needed to run away ASAP, but he stood in the rain for a while just to enjoy the freedom he just got. Same for these Chinese people too, of course they wanna have a discussion on everything, it's just their fun time for just getting out of their prison "The Great Fire Wall"..
Hopefully, a couple of weeks later. They will post more serious stuff. It's a great chance for the young people both from United States and China. The old cruel Chinese officials will be gone and young people would eventually take the power. You couldn't even imagine how much these Chinese young people love United States.
Of course, you will see some negative posts too. Ask other chinese people how they think. They probably tell you that those negative comments are most from the people who are hired by Chinese government to fake the Public opinion. They always do that in china and you will see their comments everywhere, and rarely you'll see any oppositions on big media sites, because their oppositions are always being blocked, They can't even type those words in...