>So what? You tell the app store that your machine is running Debian GNU/Linux 6.0 on an amd64 architecture.
Oh my god. I don't think you understand how completely outside the realm of feasibility this is for the non-technical user.
When tech support people bitch about users who only know that they're running 'Microsoft', and know that 'the blue e' is the internet, *they're not exaggerating*. That's not hyperbole. It's a literal description of a sizeable proportion of the user base.
I don't think it's even a significant minority, but actually the *majority* of users who don't know what version of Windows they're using - assuming they even know they're using Windows at all.
The proportion of people who know what processor architecture they're running has got to be far, far below 1%.