The rough guide to marketing success used to be that you got what you paid for. No longer.
翻译：你得到你为之付款的东西，这曾经是销售成功的大致指南。然而今天却不是这样了。
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.
commercial n.广告adj.贸易的，商业的，营利为目的的
翻译：虽然传统的付费媒体——比如电视光宝和印刷品广告——仍然扮演主要角色，但是如今公司们可以利用更多形式的可选择的媒体。
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.
leverage n.影响力，杠杆作用v.借贷收购，童子
翻译：对产品有热情的消费者可以通过自愿向朋友推销产品而创造“盈利”媒体，一家公司可以通过向在网站上注册的顾客发送关于产品和销售的提醒邮件来利用“自有”媒体。
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.
approach v.接近，靠近，建议，要求n.方式，方法
approach the process of 做出（决定），探讨。。。
翻译：如今消费者做出狗妹商品决定的方式意味着营销影响力更多地来自传统付费媒体以外的更广泛的因素。