With the popularity of Android OS, and before it iOS and OS-X, it is time we realize (and become more aware of) the differences between Open Source & Free Software..
(small note: iOS and OS-X, both based upon the Apple Inc. initiated Darwin-OS project, is based largely on FreeBSD in its core, and uses a modified Mach kernel. Apple also contributes significantly upstream)
In the ‘perfect world’, all software would be ‘Free Software’ and there would be no need for the ‘Open Source’ pragmatic compromise…
(notice all the ‘scare quotes’ in the previous sentence..)
All the more reason to keep an eye on Nokia’s Maemo project, I say.