If you want to know how your Wine Client is counter just open the "Help -> System Information" Menu and look what it says as "Operating System". It also counts Mint 64 bit as Mint and not as Ubuntu. It's sooo unlikely that there are no other distros that can't match the market share of Ubuntu 12.10 32-Bit and therefore aren't counted at all. The survey was open for about 48 hours. Yesterday I was simply asked to do the survey and the Statistics Site was offline during that time. So that was simply the timeframe where they counted everyone who was willing to fill out the survey. I think Linux is doing pretty good considering that it's just a Beta with 1 free game and Mac OSX has just a little more than double the amout of users after 2 years and 511 games available to them.
No announcement yet.
First Statistics On Steam Linux Usage