DW230 SEO

Dw230.com is a Japanese Search Engine page, wich is very popular in Japan. It is basically a starting place for surfing the web and offers quick searches on Google, Yahoo, Amazon. It also has a rank checker for Google PR, Alexa rating, etc." Dw230 Search Engine Optimization (SEO) actually doesn't exist; as this would be optimizing for Google, Yahoo etc. Dw230.com is just a starting page not a search engine.

If you would like to rank higher on the result pages for DW230.com you should optimize using the normal SEO techniques.
You can find articles on that here:

SEO articles

And specialy for the Chinese and Asian market read this article on how to submit to Chinese Search Engines.

China, Taiwan and Japan are huge markets with millions of internet users and it's smart to look into SEO for these countries. Optimizing for DW230.com will not get you anywhere though. Go for Baidu, Google and Yahoo!