Yahoo is going to become the default search engine for Firefox, but you can switch it to Google, Bing, etc.

Mozilla fishes for Google alternative, reels in Yahoo

For years, the Mozilla Foundation has gotten a lot of its income from allowing Google to be the default search engine in Firefox.

All that changed on Wednesday, when Mozilla announced it would be kicking off a five-year partnership with Yahoo, both to generate a new revenue stream and to find a partner with which Mozilla can fulfill its dream of an open Web.

Google isn't being removed entirely from the built-in list of search choices in Firefox. As explained in a follow-on blog post by Mozilla CEO Chris Beard, Yahoo is simply being made the default, with Google the second choice down in the list. Bing, DuckDuckGo, and a number of other search systems are also being included.