Ever since John Gruber started updating his Daring Fireball website on a regular basis, I find myself quoting and linking to him a lot more. It's very interesting to see him tackle a lot of the topics I have covered here on this site in the past 4 years.
One recent addition he made to his "insights" was this article on "understanding the Mac Market and switching to the Mac OS":
As always John has stated it much better than I ever could.
Here is the piece I did in January of this year:
Just How Many Apple Computer Users Are There Really