Nice, concise article.
Personally I've never been able to see files on my mum's PC over the network. I put this down to Windows, because I did everything right on the Mac side according to many tutorials (when it didn't work the first, second or third time I checked loads) but Windows would give me a different error message everytime I tried to do things on that side. Eventually I just set up FTP access on my Mac and we can share files that way.
As for the font issue, I'm not sure on this. Being used to OS X's font rendering, text looks clear and crisp to me, but I know "blurry" text is a common complaint from Windows users. Switching to XP, text looks really thin and... crap. However, as you get used to it it does become crisper (in a "pixelated" sort of way), and switching back to OS X text does look blurry. Personally I prefer Apple's approach of replicating the typeface fully, but I think being able to chose a "best fit" option is a fair point.