Great question and discussion. It answers quite a bit that I've been wondering also.
So there won't be the need to switch from chinese input to english to append the .com then right?
i.e. I thought to type 成都.com you had to:
1) Type using Chinese input 成都
2) Switch to english to type .com
Little plug and you've got me curious with the "Sold" beside it, nice sale I bet
Cheers,
Chris