题目内容：
The rough guide to marketing success used to be that you got what you paid for. No longer. While traditional "paid" media--such as television commercials and print advertisements -- still play a major role, companies today can exploit many alternative forms of media. Consumers passionate about ~a product may create "earned" media by willingly promoting it to friends, and a company may leverage "owned" media by sending e-mail alerts about products and sales to customers registered with its Web site. In fact, the way consumers now approach the process of making purchase decisions means that marketing's impact stems from a broad range of factors beyond conventional paid media.参考答案：
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