China blocks RSS feeds
Ars Technica reports that China has started blocking any URL that starts with "feeds," "rss," and "blog." That makes it pretty difficult to access the feeds for an awful lot of websites, including pretty much any site syndicated by FeedBurner.
It looks like some Chinese users are having success with online feed-readers like Newsgator. We'll see how long it takes before China bans Newsgator. In the meantime, there's always proxies and anonymous web browsers like Tor.
If you want to find out if your website is blocked in China, Website Pulse has a Great FireWall of China testing tool.