Dori: > My favorite part of this is going to Amazon.com and tracking sales the day > of and after an appearance. They appeared on KHOW-Denver and went from > about 4,000 to 418. I kid you not! There's no way a jump that big is a > freak occurance. Does it represent 10 books sold or 100, or more, or less, or in-between? If you enjoy such goings on, you'll likely enjoy finding out the mathematics behind it even more, no? What is the interval, is #1 question. What does it represent in absolute sales terms, is #2 question. Questions 3-10 I'll leave to you. Do report when you find out. I am very curious. Cheers, Kirt