Yahoo is making a number of changes to its default search experience tonight to add more structured data to results. Yelp, Yahoo Local and LinkedIn SearchMonkey widgets are being added to search results automatically, eliminating the need for users to go into the search gallery and add them manually.
With SearchMonkey, site owners create “applications” for Yahoo search that can be installed by users in the same sense that Facebook applications can be installed. Each application modifies results for a certain URL specification (for example, all reference pages on Wikipedia or product pages on Amazon). Modifications include both changes to the basic elements of a search result (the title and description) and additions such as an image, deep links, and key/value pairs.
Users can also add additional widgets via the Yahoo Search Gallery.