Net Applications is analyzing market shares of the different operating systems according to the Internet usage of these computer systems. It’s basically the same technology of services like Google-Analytics, but Net Applications is not only analyzing the visitors of their own website - they are using much, much more data.
For the Mac-community it is great to see, that the market-share of Macs is growing continuously in the last months. In February 2007 the market share is 6.38% worldwide. The share of PowerPC based Macs is nearly constantly at 4.29%. The share of the new Intel based Macs grew up to 2.09%. It seems, that those numbers are proving the theory that Apple can attract more and more new Mac-customers with their switch to Intel processors and their successful iPod series.

Source: Net Applications