The NSA has been doing this since 2003, probably before. It's extra creepy that DARPA is now in on the act, but that's about it. http://www.wired.com/science/discoveries/news/2006/04/70619
I know we're all concerned with China's web censorship (I certainly am; I live in China). But the ChinaDaily is reporting that the Chinese are *controlling the weather!* http://www.chinadaily.cn/china/2010-03/28/content_9652977.htm (Sorry, I don't know how to make links in this dialog).