Tokyo subwayTwitter on Tuesday announced it has formed a partnership with Yahoo Japan that will allow Yahoo customers to see real-time Twitter results integrated with search results. Tweets will be integrated into various Yahoo services, beginning with real-time results pages.

The announcement is a big deal because Twitter has a large number of users in Japan. Twitter launched a Japanese version of the site back in April 2008 after noticing many Japanese users on the English version of the site.

“Twitter’s mission is to instantly connect people everywhere to what’s most meaningful to them,” Twitter wrote on its Japanese blog. “We believe that a partnership with a strong web platform such as Yahoo Japan will help us fulfill this mission for the Twitter Japan community.”

Since Japan is such an important market for Twitter, it makes sense to see these types of partnerships popping up. Just a few weeks ago, Twitter partnered with the largest mobile operator in Japan, NTT DOCOMO, to help bring the service to more people.

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