"We're seeing the mainstream use of Linux has spread," Red Hat spokesperson Leigh Day said. "It's difficult to calculate all the places it shows up and all the places it affects our revenue." Red Hat Linux is being used in wireless routers and medical devices, according to Day. It also is showing up in unconventional applications.
http://www.linuxinsider.com/story/hX7L7FBiBp3Sd2/Red-Hat-Still-Committed-to-Embedded-Linux.xhtml