Ratings and excerpts from Yelp's merchant reviews began to appear in Yahoo's search results on Wednesday.
Financial terms of the partnership weren't disclosed.
Yahoo Inc. is hoping the snippets from Yelp Inc.'s popular service will spur more people to rely on its search engine when they're looking for information about a specific city. Yelp could generate more revenue and polish its brand by having its content featured in Yahoo's search results.
Boosting search traffic is a high priority for Yahoo CEO Marissa Mayer because the queries spawn insights into users' interests. That knowledge can then be used to sell advertising.
Yahoo ranks a distant third in Internet search behind Google Inc. and Microsoft Corp.