I am quite amused at the most popular search in Google:

Who is … God
What is …. Love
How to …. Kiss

Seems some topics or questions never go out of style.

I think this is worthwhile mentioning.  If you go by this analysis, then it follows that Apple Macs are actually more threatening to Microsoft than Linux is.

Apple has over 10 times as much installed base as linux.

But working with microsoft as a partner, we do see that Microsoft is more concerned on Linux.

Why would this be.  Maybe its because  Linux is not a company, but a movement.  And it is not driven entirely by the same initial objectives as microsoft as a company.  It is easier probably for Microsoft to compete with Apple, knowing it is driven by the same financial, closed source development model as Microsoft. 

Maybe we are more threatened, not really by our closer enemies, but more on enemies and threats that we don’t understand.

for instance, I constantly read that travelling by plane is safer than travelling by car.  But why do I get more uneasy in the plane?  maybe because there is not much I can do about being safe in planes, but I can do something about safety in my own car — better maintenance, more defensive and careful driving, etc.

Apple Matters | Apple is Killing Linux on the Desktop

However, as is also being noted, it is the trend of these figures that bears consideration. In the last two years, OS X has seen continual growth, from 4.21% in Jan 2006 (the first month of figures), to 5.67% in December 2006, to 7.31% in December 2007.

In the same time, Linux’s percentage has risen from only 0.29% to 0.63%. Although depending on how you apply the maths—you can put a positive slant on that by saying it’s more than doubled—the cold truth is Linux on the desktop is still barely worth mentioning. To paraphrase: reports of its life have been greatly exaggerated.

Not that long ago there was almost a consensus that Linux would soon
over take Apple. Several commentators suggested a few years ago that
Apple’s biggest threat was not Microsoft, but Linux. Apple has taken
care of that threat!

It’s not hard to understand why Linux has failed to live up to the
promise of being a viable desktop alternative to Windows. Linux’s
problems are many. For example: Apple has Microsoft Office, Linux
doesn’t; Apple has Adobe Creative Suite, Linux doesn’t; Apple has
easily accessed and easy to use service and support, Linux doesn’t;
Apple is driven by someone who has some understanding of end-user
needs, Linux is not.