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去年仅美国用于直销(五花八门的实体及电子垃圾邮件)的花费就达一千七百亿美元。而那些通过信件收到垃圾广告的人中只有3%为此购买商品;如果广告以电子形式送达,吸纳率则只有0.1%;在线广告转化为购买行为的比率更是只有小小的0.01%。这就意味着约一千六百五十亿美元并没有用在推动业务开展上,而是造成了民怨沸腾、垃圾成山及垃圾邮件过滤器不堪重负。在隐私消失殆尽、网页浏览被
Last year alone, the United States alone spent 170 billion U.S. dollars on direct sales (a large variety of physical and electronic spam). While only 3% of those who received junk advertisements by letter purchased the goods for this purpose. If the advertisement was delivered electronically, the take-up rate would be only 0.1%. The rate at which online ads would be converted into purchases would be only 0.01% . This means that about 165 billion U.S. dollars have not been used to boost business. Instead, it has caused people to complain, get trash and spam filters overwhelmed. Disappeared in privacy, web browsing is