Yahoo has just announced that the Wikipedia SearchMonkey App is now turned on by default for all Yahoo search users. Wikipedia becomes the sixth app that all Yahoo searchers will see, joining LinkedIn, Yelp, Yahoo Local, Citysearch, and Zagat.

SearchMonkey adds enhanced content to the search results page. The Wikipedia app includes a snippet of text from the Wikipedia article summary, deep links to the first four sections of the article, and a photo if the article has one. Here’s a screenshot that Yahoo provided showing the Wikipedia app in action:

With the new app, Yahoo now joins Google and Live Search in a Wikipedia love triangle. (Quadrangle? Square?) The SEO industry has argued for years that Wikipedia ranks too high, too often in Google’s search results; almost two years ago, we wrote how Google sends Wikipedia tons of traffic. In May of last year, Live Search joined the fray by showing expanded descriptions under Wikipedia results. It’s good to be Wikipedia.

Related Topics: Search Engines: Wikipedia | Search Features: Enhanced Listings | Top News | Yahoo: Search | Yahoo: Search Monkey

About The Author: Matt McGee is Search Engine Land's Executive News Editor, responsible for overseeing our daily news coverage. His news career includes time spent in TV, radio, and print journalism. His web career continues to include a small number of SEO and social media consulting clients, as well as regular speaking engagements at marketing events around the U.S. He blogs at Small Business Search Marketing and can be found on Twitter at @MattMcGee and/or on Google Plus. See more articles by Matt McGee