They linked to some information at the bottom of the article: http://www.zdnet.com/blog/btl/mozilla-posts-2009-revenue-surge-google-diversification-issue-remain

They linked to some information at the bottom of the article: http://www.zdnet.com/blog/btl/mozilla-posts-2009-revenue-surge-google-diversification-issue-remains/41937 http://www.zdnet.com/blog/btl/mozilla-posts-2009-revenue-sur... "Approximately 86% and 91% of royalties revenue for 2009 and 2008, respectively, was derived from this contract [with Google]."