Mozilla makes some money from its Bing, Yahoo, Yandex, Amazon and eBay partnerships but almost 90% of its revenue comes from Google.
When you think of Google and Mozilla you probably think of them as Web browser rivals. On the one side, you have Google with Chrome; on the other, Mozilla with Firefox. Or, looking ahead, you might see them as mobile operating system competitors with Google’s Android vs. Mozilla’s Firefox OS. But, have you looked at Mozilla’s financials? You should.