The public perception of open source software is changing fast. French police force was currently deploying 50,000 Ubuntu-powered machines, while Spanish education authorities were rolling out 500,000 desktops with the OS. Hardy Heron also has improved support for multimedia, including photo editing, music sharing and video playback. It's a favorite version of Linux both for specialists and one that specialists would recommend to a cousin, aunt or uncle who want to have a stable desktop internet experience. There are other versions of Linux that are better for a particular purpose - but Ubuntu strives to be a general platform that is secure and self-maintained.
Many commercial companies emphasizes the use of its own products inside the company to convey the confidence in its own product.
Now Microsoft decided to eats its own dog food. Microsoft is preparing a fully Silverlight-powered redesign of their website. This will push Silverlight usage to more users. Silverlight is a runtime for browser-based Rich Internet Applications, providing a subset of the animation, vector graphics, and video playback capabilities of Windows Presentation Foundation. The runtime is available for Microsoft Windows and Mac OS X, with Linux support under development via the third-party Moonlight runtime.
=> More information: Microsoft to Push Silverlight via Redesigned Homepage