I wonder how the desktop market share data are obtained. From browser data? This is naive as many linux users change or randomize their user agent. It must be that since counting OS sales does not work. I use linux as my major operating system since 20 years. But there are still things I can only do on a commercial OS like Mac OS X: For example solid video editing, screen recording, Keynote, garage band, and serious gaming. But for most day to day operations, there is very little difference between OS X (when used as a Unix workstation) and linux. My desktops and workflows look almost identical. I guess, also windows could be configured today to behave like a unix workstation. But the loss of control which the the user over the OS (basic things like when and how to upgrade, or the look over the shoulder of the user) which happens today in windows makes it unfit for serious work. What would really be nice if virtualization would exist which allowed to run any OS X software on a linux box. It seems that installing OSX on a virtual box has not yet worked well. The few who have got it to work claim slow graphics, sound failures. I have not heard for example of a successful and solid Final cut run virtualized under linux. Parallels does a good job virtualizing windows on OSX.