I notices that the geocaching.com webpages are now in UTF-8 encoding so it should be able to show different language characters. But when I tried to put Chinese into the list all the Chinese characters were showed as question mark.
I think if the whole website uses UTF-8 encoding it will be i18n compatible so that every languages can be displayed.
I have to say that if geocaching.com can support multi-language, it will bring more and more GPS owner to join this interesting activity.
There are little caches nor users in China. The main reason is that GPS is still not popular in China, the second reason is the language barrier. I have introduced this website to a lot of GPS users in China but they feel difficult to enjoy because all the informations are in English only. Some geocachers in China even made their own website in Chinese. But if we can post cache in both English and Chinese description to geocaching.com, it will be better that the caches can be shared to geocachers all over the world.