For those of us trying to learn our target language by immersion - i.e. using it all the time, for everything, without seeing or using any of our native language - using the Skritter website currently breaks that immersion. It would be great if Chinese and Japanese versions of the website and program were available.
Obviously seeing your definitions and mnemonics while using Skritter is still going to break the immersion, but having everything else in the target language would help. (There are ways to set up spaced repetition systems that only use the target language, and they could probably be incorporated into Skritter, but of course that's a big change and a different discussion.)
(Btw I'm a new user here and this and my other post are not meant to be critical of Skritter - I'm loving it so far - just suggesting tweaks that might be nice.)