For a country who doesn't really do April Fools' Day, you know China means business when it lays the smackdown on its weibo services. Here's the background story: about a week ago there was a rumor on the Chinese web about a military coup on one of the main streets in Beijing, and coincidentally I was in town around the time (for the Windows Phone launch). Funnily enough, I wasn't aware of this at all until my taxi driver in Hong Kong asked me about my visit, as he claimed that the passenger he picked up beforehand was actually a Chinese military officer who had several in