seems like only linux/unix users respond to this... I use windows and mac and every user i support as an IT Manager recognizes, uses, and understands these platforms. Linux is still guided towards more advanced users who don't mind and know how to run command line, installer drivers and do other tasks. The common (normal user) wants it all done for them, hence move users moving to mac. I still personally prefer windows for many reasons and Win7 is a huge improvement in the right direction. To each his / her own in the end, but try not to be so close-minded, reading between the lines. 20 million 'might' be on unix/linux based systems, but how many are on Windows and Max? 200 million? 1 billion worldwide? Glad the options are out there though. Choices add to the overall competitive nature of the interest and helps to reduce costs and push technology. good luck.