The keyword tracker has always supported keywords consisting of multi-byte characters, but it would never render those characters properly in the legend on the chart (since it's an image). Anyway, I finally got around to fixing that, so Japanese/Chinese/Hebrew, etc. characters look correct on the legend for custom charts.
Thank you big guy & to keep you international new school Be on the look out for IDN domain names people might want to use too. I've informed the guys at google what's working & what's not working with IDN domains too. It's not just domains with an international extension it's an international keyword like アニメ.com (anime.com in Japanese) The registrars have a system called punycode to map it So it would look like this xn--cck5dwc.com They were developed 5 years ago but because IE couldn't use these domains it was really neglected (Firefox is not very big in Japan) but the new IE which is in public beta will use these domains & it will start Domaining 2.0