It helps for when you have a variable that's for numbers and you use it as a string or something else, it shouts an error. In other words, it protects you from yourself
I was talking specifically about MacOS X vs. everything else because, for example, you don't have to setup the bios. Just hand out a macbook for everyone and (mostly) deployment compñete, i guess
Using Last.fm for recommendations and buying the albums from bancamp (yes, I'm aware of the recent news about bandcamp, I'm very worried but depending on what happens a new platform may emerge like bandcamp, who knows) or just... pirating it
You can delete your account(s) clicking on "accounts in this Account Center" btw