Why would you want to exit if it's flawless?
Also, plenty of things are unstoppable withough killing them, notably, many deamons.

More developed countries are cheaper, why is this news?
I live in Argentina. I pay 60USD for 3MB. Some (worse serviced) ISPs offer 5MB for that price.

South Korea is first world, and a VERY developed country, it's only natural that it's chepear than countries that are not.

And that's their undoing.
Show the user 10 captchas:
If none match -> It's an old bot
If some match -> It's human
It over 90% match -> It's this new algorithm.

There, solved!

"slightly lighter" to a SINGLE book. Plenty of people have to carry many books to, for example, the university. I walk about 2.5km and back every day to uni. Carrying a bunch of books with me is out of the question - it's just not good for my back.

Also, it will get more people to use Apple software, hence, reducing changes of those users moving to another OS.

No, you should not trust him. It's for this exact reason that the procedure was published so you can review it yourself, and see if your results match his.

Actually, there is no COPY in this scenario; Mail.App sends a command to save a new message to the server, with the same content as the other one.

It's perfect. No unfreed memory. Since it's not a function call, there's no stack that can fill up. I can't think of ANY way to improve this!

Because Linux doesn't have the same resources behind it as Windows does.
Also, windows' sound support is about a decade behind linux (can't select an output for each program? WTF?).

Anyway, I never said it was simple, I merely stated that "wide hardware support" is a fallacy; it support on architecture, while Linux and BSD support about a dozen each.

Linux supports a great deal more hardware, and has bettery battery life.

You're free to perform a clean install, and most power users will. That doesn't change things much

Hardware acceleration means less power usage.

Every MBA hardware component is available in other vendors' notebooks. Also, Windows has worse battery life on a Macbook, while linux has only-slightly-worse, so again, the hardware is not to blame.

That's funny, because I get 11-12hs of battery life on a 2013 MacBook Air with ArchLinux.
Don't blame the hardware, there's a third OS clearly proving that it pretty much possible for others to support this hardware.

My pc which is lacking a PSU also has awesome power management. About 0Wh. It probably runs as many apps as WP7.

Sarcasm aside, that's pretty much the point; if there are no apps to run, of course battery will last longer!

Linux is meant to run on lighter hardware, which means it tends to use less CPU. Less CPU usage = less power usage.
The real question is, how did they manage to bloat windows so much?

It runs on TWO architectures, and requires CONSIDERABLY more minimun hardware than Linux/BSD. How is that an excuse?

The linux kernel is way older than Windows' NT kernel, but is till offers considerably longer battery life on the same hardware.
Age is irrelevant, it's just bloated!