https://blog.mozilla.org/blog/2014/11/19/promoting-choice-an...
Google has been the Firefox global search default since 2004. Our agreement came up for renewal this year, and we took this as an opportunity to review our competitive strategy and explore our options.
In evaluating our search partnerships, our primary consideration was to ensure our strategy aligned with our values of choice and independence, and positions us to innovate and advance our mission in ways that best serve our users and the Web. In the end, each of the partnership options available to us had strong, improved economic terms reflecting the significant value that Firefox brings to the ecosystem. But one strategy stood out from the rest.