I have some project with Japan-related content. Several people have told me that Japanese hosting (a data center based in Japan) is preferred to make sure that Google/Yahoo will give the best possible listing for Japanese language searches.
My question is: can you offer Japanese hosting (a data center based in Japan)?
The domain name country code.
The IP address geo location.
From what I've heard, as long as you have a .jp domain name, or set the preferred location in webmaster tools, you can host in any country.