FWIW, Steam reports 3.57% of users running OS X in April [1].<p>[1] <a href="http:&#x2F;&#x2F;store.steampowered.com&#x2F;hwsurvey" rel="nofollow">http:&#x2F;&#x2F;store.steampowered.com&#x2F;hwsurvey</a>