Or it could mean that you don't know how the "multitasking" API works. In short, most applications are suspended when in the background. Only certain pre-determined classes of applications are allowed to continue operating in the background, and when their background functionality is not in use (e.g. Pandora stops playing music) the app is suspended like any other. As such, most apps that may technically still be running are only using RAM but no other system resources.

Not only that, but it's not supported by Apple as of Snow Leopard. The Snow Leopard installer explicitly disallows use on a case-sensitive filesystem.

The sync of meta-info allows all sorts of extra functionality. First of all, people that say "I'll just put it into folders" are rather silly. You're totally disregarding all sorts of really useful metadata.

Playlists generated on the computer - or generated on the portable device - that sync both ways. Play counts and ratings, which feed into dynamic, rule-based playlists. The ability to quickly establish "sets" that synchronize, that include multiple artists, albums, etc, while still maintaining easy access to an alphabetical list of artists. Or albums. Or genres.

It's like somebody trying to manually manage all of their photographs. Works great for 100. Works somewhat alright for 1,000. Totally unworkable with 10,000. It becomes more and more work, which is what computers are supposed to do, right? What Picasa/iPhoto are to photos, iTunes/(insert media player here) are to music. They allow you not just to use your music but to manage it. Let the computer do the work.

Except you're wrong. Memtest86 is largely assembly, based on the (2.2?) Linux kernel. It requires no OS and handles all hardware access on its own. Memtest OS X is a userspace app that one runs from the command line. As it is a "fat binary" that runs on PPC as well as x86, and was around before there even were Intel Macs, I rather doubt it was based on Memtest86 at all. They just happen to share similar names.

Before you drag someon'e name through the mud, please know what you're talking about.