Apologies over that, I had spelt it wrong, but then again that is precisely the problem with transliterated names. How long did we spend calling Beijing by the name Peking. The great advantage with the Hanzi characters is that they are totally unambigious, and will therefore help to prevent phishing attacks in Asia.
http://www.google.com/trends?q=杭州,+Hangzhou&ctab=1&geo=all&date=all
No, but if the main domain for Malta is worth $250,000 the main one for Beijing has to be worth 100 times that amount, and the IDN is still out in front. Once China gets online proper there really will be no contest.
Not quite sure what is going on with Taiwan but I suspect you don't have the key term for that one. I will check it out.
Yes, as I thought there are at least two more popular local terms for this:
http://www.google.com/trends?q=Taiwan,+台湾,+台灣,+臺灣,&ctab=0&geo=all&date=all
Figures for Tapei are as follows:
http://www.google.com/trends?q=Taipei,+台北,台北市&ctab=0&geo=all&date=all
Yes, these figures would indicate greater usage of the English Forms, but then the Chinese have their own search engines, so the Google results are almost certainly skewed towards US traffic.