When Rousseau wrote his social theory, concepts of liberty and freedom were not new ideas. Hints of social contract reasoning are found in earlier works, most notably in Book 2 of Plato's dialog The Republic, as well as, in Socrates.
The total spending per iTunes account is $43 per year across all media, says Dediu. At 575 million iTunes accounts, that works out to $24.7 billion of consumer spending at iTunes per year. The average iTunes account's annual spending on software has followed music's trend, falling to $9 from $42 in 2008. However, average annual spending on apps has gone in the opposite direction, rising to $16 this year from $7 in 2008.
About cards and codes. iTunes Store Gift Cards: 1  When you redeem an iTunes Store Gift Card, the amount of credit on the card is added to your iTunes Store account. 2  You can use it at any time to buy items in the iTunes Store, App Store, or iBooks Store, pay for in-app subscriptions, or make in-app purchases. On your device, tap iTunes Store, App Store, or iBooks Store. iTunes Store Gift Card amounts are credited to your Apple ID, so you can use them in any store as long as you sign in to each store with the same Apple ID. 2  Scroll to the bottom of the Featured section and tap Redeem. 3  Sign in with your Apple ID.