It's the middle of summer and you're sitting on your couch wishing you were doing something. Suddenly your phone vibrates and wakes you from your daydreams. You reach over and check the screen. Seeing that it's one of your friends, you hurriedly check the message. Your friends want to know if you were invited to the huge party that everyone is going to this weekend. You type in your reply and hit send, watching reluctantly as the phone works to deliver your answer: no.