The news isn't all bad for Microsoft, though. The various Windows iterations still account for nearly 92% of all desktop visitors to Net Application's websites. Windows as a family is doing fine, even if Windows 8 is struggling to make an impact.
Plus, while Windows 8 might not be living up to the usage standards established by its forebears, it's almost caught up to Apple. Mac OS X 10.8--you may know it better as "Mountain Lion"--has been available since all the way back in July, and it still only claims a 2.44% usage share in Net Application's report, despite the appearance of new iMacs and Retina Display-packing MacBook Pro laptops. Expect Windows 8's usage share to sneak past Mountain Lion's this month.