I missed Red Hat's fiscal 1Q09 release a few weeks ago, so I went back and read the transcript and dug into the numbers a little.

As you can see in the table below, total revenue growth has averaged 31 percent/quarter since fiscal 1Q08. Surprisingly though, Sales & Marketing and R&D have grown 32 percent/quarter and 37 percent/quarter over the same period. More evidence to refute the myth that open source doesn't need sales, marketing or R&D investments.

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