ric482 writes "With the release of the Mozilla Foundation's 2007 financial report, questions have been raised by the IRS, who are due to perform an audit on the non-profit organization behind the massively popular Firefox browser. Last year, the Foundation received $66 million of its total $75 million revenue (88 percent) from search engine maestros Google, so the IRS are looking for blood over the organization's tax exempt status. Back in 2006, Mozilla got $59.5 million from Google — around 85 percent of the organization's revenue. Google and Mozilla are part of a 'you scratch my back, I'll pay your bills' sort of agreement, with the Google search bar firmly placed in the toolbar, and on the default homepage. Things were a bit rocky a couple of months back when Google unveiled the Beta-run of its Chrome browser, but Mozilla and Google hugged it out and sealed a deal that will last for another three years. That deal will expire in November 2011."