After Google and Bing (Microsoft), Twitter has struck a deal with Yahoo. It’s a bit more than real-time seach and is more a content-sharing deal.

Mashable has details on what that exactly entails.

We knew that the Yahoo-Twitter partnership would be comprehensive and more encompassing than Twitter’s search partnerships with Google and Bing, but now Yahoo tells us that the integration will focus on three primary areas:

- Access to your Twitter feed on Yahoo: On Yahoo Mail, Sports, the homepage and other Yahoo properties, you will be able to check the most recent tweets of your friends.

- Ability to update status from Yahoo: Yahoo will become a Twitter client, allowing you to update your status from multiple locations on Yahoo. We’re not sure if this is going to be through widgets or another method.

- Yahoo Search and media integration: Public Twitter updates will be integrated throughout Yahoo Search, News, Finance and Entertainment, among other properties.

Yahoo will have full access to the Twitter data firehose, so you can expect real-time updates in Yahoo Search, among other integrations. It will use tweets to improve relevancy, freshness and search results, as well as “drive deeper user engagement.”

The first integration will be available “immediately,” and that is the real-time search integration. This brings Yahoo Search in line with its competitors in terms of real-time data. You can probably expect this to launch fully later tonight or early tomorrow.

As for the other integrations, they will launch later this year.