There are various ways in which one could measure the reach of a new OS in the market. Usage share is important one among them and Steam gaming service usage numbers will give us a glimpse of market trend. According to the December month stats from Steam, Windows 8/Windows 8.1 saw a growth to capture about 20% of the usage share among Steam gamers. Windows 7 remained the most popular OS with an usage share of 64.38%. According to the_the latest market share data from Net Applications, at the end of_ December 2013,_Windows 8 and Windows 8.1 gained 0.85% points. It now holds 10.15%, up from_9.30% in November._Thanks to new PCs and the free update for Windows 8 PCs,_Windows 8.1 market share increased by 0.86%_from 2.64% to 3.50%.   Source: Steam_via: Neowin

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