Ok. Apparently, I have a few comments rather than one or two, for which I've already sent two different emails...
<quote> Customise - All code is available for reuse </quote>
The typical end user couldn't care less. Use KDE as an example. Windows simply does not offer you that kind of control, that easily. For example, no need to install 3rd party non-free (cost wise) software just to install themes.
Choice is an important point. With Windows, the user is stuck to the default interface. In Linux we have GNOME, KDE, XFCE as Desktop Environments that are different and offer choice. Plus the various Window Managers. E17 - do not forget about it. It rocks.
<quote> Platform Indpendence - Runs on Intel x86, ARM, Alpha, Sparc, Mips, SH, Sharc, Power Omap and many other architectures. </quote>
Would I really care, as an end user? I'd only worry about Intel x86 and AMD64 in most cases.
Hmm. Many devices work out of the box. For example, just plug in your Sony Ericsson mobile phone and it works! No extra software to install, no drivers needed.
<quote> Security - secure by virtue of being a multiuser multitasking networked system by design. One of the spinoffs is that GNU/Linux is essentially virus free </quote>
Add spyware. Major concern these days. This also means no installation of 3rd party software.
Also, no need to use pirated software or cracks. Nearly everything is free as in cost and legitimate.
Also mention the fact that when you install a Linux Distro, all the software is installed, instead of having to install it manually. Huge plus.
Software installation can be a plus. No need to hunt various sites for software downloads. Just open some GUI and look for the software you want and click install. Automatically downloaded and installed. Quite likeable.
The LiveCDs are loved, trust me. Newbies love the ability to pop in a cd and check out software without having to install it. The point should be moved higher up the order.
Whom exactly is this document aimed at? Newbies? I would guess so. Please bear in mind the target audience before writing. I would rather split up the document for Desktops and Servers.
You forgot to mention the features that certain apps offer that aren't available in Windows, for example Amarok, superkaramba... And Beryl!