True multitasking was introduced only with the iOS 7 version. Before that apps would simply be in the background, not running actively.
The purchaser of the 10 billionth song from iTunes was 71-year old Louie Sulcer from Woodstock, Georgia. The song was "Guess Things Happen That Way" by Johnny Cash. Sulcer got a call from Steve jobs and a $10,000 iTunes gift card. [more...]