2009/4/21 Ian Woollard ian.woollard@gmail.com:
Presumably the wikipedia can find out what proportion of its traffic actually comes from China, and compare that with the Alexa statistics. If they're close then it gives some evidence that Alexa have enough toolbars out in the wild in China to give reasonable accuracy.
Yes, that would work. Or, perhaps more easily, we could compare the page views per subdomain with the percentages given by Alexa. Are those numbers available anywhere?