Reality - "The foundation has used a for-profit subsidiary, the Mozilla Corporation, to collect tens of millions of dollars in royalties from search engine companies that want prominent placement on the browser. According to Mozilla's 2006 financial records, the foundation had $74 million in assets and last year it collected $66 million in revenue. Eighty-five percent of that revenue came from a single source - Google, which has a royalty contract with Firefox. In the same year, it paid the corporation's chief executive, Mitchell Baker, more than $500,000 in salary and benefits." - The New York Times
"The Mozilla Corporation pays its employees from the revenues we receive from our product. We are very fortunate in that the search feature in Firefox is both appreciated by our users and generates revenue in the tens of millions of dollars." - Source
"Now, the Mozilla Foundation, the non-profit entity that develops and distributes Firefox, is forming a for-profit subsidiary that will eventually capitalize on the browser's popularity. The Mozilla Foundation will announce today that it has formed a wholly-owned subsidiary, Mozilla Corp." - Forbes
"Firefox, which is produced by the for-profit Mozilla Corporation, made $72 Million last year and is on target to have 120 employees this year."