Mostly overlooked in Apple's quarterly report dealing with sales and revenues is the remarkable -- in some cases, astonishing -- growth in Apple's cloud-based services, ranging from the four trillion notifications sent to iOS users through Notification Center to the record-breaking $2.1 billion profit for iTunes. Users now send over two billion iMessages per day -- bypassing the cellular carriers' biggest profit center, SMS messaging -- from over 500 million devices, and over 250 million users now have iCloud accounts.
