Tóm tắt nội dung: You have something you want to sell on the Internet. Maybe it's a book, or a CD or a piece of software you wrote. You are in luck. The time has never been better. Internet shopping has become a mainstream activity. Increasing numbers of people are willing to open the wallet to purchase items or services over the Net. "But," you say, "How do I collect the money from the customer?" Good question. There are several methods of collecting monies from online sales. Many online...