It’s been three weeks since we began the limited preview of Yahoo! Search’s new open developer platform, SearchMonkey. Today, we’re officially opening up the doors to all developers — professionals and hobbyists — to begin building applications that enhance the usefulness and relevance of search results.
There are three components to this open ecosystem:
So, what’s in it for third party developers?
With SearchMonkey, developers have a hand in shaping the next generation of search by building customized search results and mash-ups that users can add to their Yahoo! Search experience. By leveraging structured data from sites like CitySearch, StumbleUpon, eBay, or Epicurious.com, developers can add navigational links, reviews, contact information, and even locations to provide enhanced search listings.
Developers can build two types of applications using SearchMonkey: Enhanced Results and Infobars. Enhanced Results replace the current standard results with a richer display. All the links in the Enhanced Results must point to the site to which the result refers. Infobars are appended below search results and can include metadata about the result, related links or content, or links for user actions (such as adding a movie to a Netflix queue).

The process for building SearchMonkey applications is very straightforward:

Announcing the SearchMonkey Developer Challenge
To foster innovation and creativity on the SearchMonkey platform, we’re hosting a good old-fashioned competition. The SearchMonkey Developer Challenge will recognize innovative applications within four categories: Best Enhanced Result, Best Infobar, Most Innovative Use of Structured Data, Best Data Service, and Grand Prize (best over all categories). You have until June 14th to submit your applications for a chance to win up to $10,000.
And don’t forget to come kick things off with us this evening at the SearchMonkey Developer Launch Party. Catch live demos, meet the product team and enjoy free food, beer and, of course, schwag at Yahoo!’s Headquarters in Sunnyvale.