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Using a platform called Search Monkey, Yahoo has incorporated "deep links" and images from Wikipedia into its search results.

This means that when a Wikipedia-hosted page appears in search results, Yahoo will add links to the first four sections of the article which invite users to dig deeper (in the example below for "cheeseburger," the links are "History," "Variations," "See Also" and "References"). An image and text summary will also be included:

The inclusion of deeper Wikipedia material is part of Yahoo's ongoing effort to improve search results with help from third parties. Late last year it incorporated deeper entries from sites like Citysearch, Zagat, Yelp and LinkedIn into search results.

Users that don't like the deep-linking feature may switch one or all of them off at Yahoo Search Preferences.