[teod]

I'm not sure if it still has relationships with Google, but it did form a partnership with Yahoo recently [https://blog.mozilla.org/press/2014/11/yahoo-and-mozilla-for...].

[digi_owl]

They diversified. I Think they provide Yahoo search by default most places, Yandex in Russia, and some other one in China.

[soapdog]

Yahoo! is the default for U.S.A. Yandex for Russia, Baidu for China. All the others default to Google. And yes, you can always change the default search engine to your preferred one in the preferences.