This is interesting, but has anyone noticed that .cn URLs and Chinese .com's seem to always be a combination of ASCII roman characters and arabic numerals, rather than Chinese characters? Why is this? Is writing in pinyin and converting the URL to Chinese undesirable?
On a side note, has anyone ever noticed Chinese characters in the URLs indexed by Baidu? Is Baidu even able to index URLs with non-ASCII Chinese characters? I've only ever seen roman characters in the URLS they index.