Re: In addition to Steam it's also Linux
" fully supports more devices than any other device ever"? Pull the other one - finding appropriate drivers for some pretty mainstream hardware is what puts me off pushing my family on to Linux. Granted, the fault generally lies with the manufacturers, but the fact is that an off the shelf printer/scanner will work fine on Windows/Mac, but I'll be lucky if I can print a wonky test page from my Mint install. I can forgive my TV tuner not working, given that it's from an obscure manufacturer, that appears to no longer exist (even if the chipset is listed as supported in some list I found), but the software required to use the PC as a TV looked pretty crappy in comparison with Media Centre.
Ranting aside, this SteamOS idea could well push Linux towards mainstream acceptance, which I would welcome (mainstream acceptance = recognition by device manufacturers).