FWIW re that ^ question, I have the HTC Desire now, Android 2.2, and I've looked around some at apps. What I've come up with thus far is
HanWriting, a handwriting recognition app for Chinese characters (and as an app it has a huge amount of potential--it looks and works great, it just doesn't recognise characters very well unless your input is spot on--so, kinda crap as an app currently.). There's also
Hanping Chinese-English dictionary, which is cool and includes bad words, and there's either
Sogou or Google Pinyin as choices for IME. I like Sogou because it's what I use on my laptop. Haven't tried the Googster's.
But buying the phone in China means you get various IMEs anyway, and one of them on my phone accepts such input as one can squiggle on the touch screen and is moderately accepting in recognising what you write.
(And I forget exactly where I got the versions I'm currently using, so YMMV re the links included above.)