Google Analytics not only maintains how many visitors your website has and where they are from, it also has detailed breakdown of how they get to your site. From these statistics, you can more or less sense the current status of Internet. It is interesting to study them and compare them from time to time to see the transition of the computer industry.
The following screenshots are from Google Analytics of my blog site. My site has only about 900 visitors so far, but I think we can see some trends already. The noises made by my own visits should be mostly eliminated, because I can configure WordPress‘ Google Analytics plugin to not to send statistics to Google for logged in users.
Operation Systems: Windows dominate; MAC has 13% market share.