I think the tracking of activities online has become confusing to advertisers. Or perhaps they need to refine the process.
I noticed the banner ad at the top of my email was for the 2010 US Census. I'm not surprised my government is wasting money on such advertising, but I am surprised that the ad is in Chinese. And I'm almost certain that I haven't sent any emails with Chinese characters through that account. Maybe they're just tracking the sites I visit and decided that I must read Chinese because 1% of the sites I visit are in Chinese.