Traslations in Google

How to organise it

[Good_Vibes]

I am translating sites from English to Chinese, Japanese and Spanish. I am interested in the SEO differences between:
1.www.domain.co.jp
2.jp.domain.com
3.www.domain-jp.com
This would be the Japanese version of the English page. I suspect that www.domain-jp.com is probably the best for Google in the long term, and that www.domain.co.jp is best for Google in the short term. I have no experience with subdomains (jp.domain.com).

Does Google frown on any of these?
Is one better for SEO in the search engines than another?

[takagi]

Since there is only one country where the Japanese language is an important language, Google Japan [google.co.jp] has no options for 'searching in Japan' AND 'searching in Japanese'. For Google Spain [google.es] or Google Germany [google.de] that's different.

For other Search Engines it could help to have a '.jp' domain (www.domain.co.jp or www.domain.jp). But these are more expensive and it might be harder to get one.

See also: co.jp Domains & hosting - Do they have to be hosted in Japan? [webmasterworld.com]

.jp domain registration - I want to start a .jp domain registration company/site. [webmasterworld.com]

As for option 2 or 3 there is no big difference I guess. Maybe only in the way results are grouped in the SERP, but it's unlikely that an English and a Japanese page will end up in the SERP for the same query.