The first question has different answers but in its most common form in North America, it is about rewards. So you sign up for an airline frequent flyer program in the hope that over time you will accumulate enough miles to get the free tickets. Since...

Heard about Randy Pausch's death and was quite sad. He was such an inspiration. I don't know how he could go on with his speeches and lectures without looking sad and unhappy as one would expect from someone who was nearing the end of his life. This is...