The idea here is that if other people find your website helpful or entertaining enough to recommend that their visitors check it out, it must be worthwhile.
原理是，如果其他人因为你的站点很有用或者很娱乐而把它推荐给自己的用户，那么你的站点就是有价值的。
Therefore, it must be stressed that the majority of your SEO efforts should be spent seeking inbound links, not endlessly tweaking your own website.
因此必须强调的是，你得把大部分搜索引擎优化工作放在寻找入站链接上，而不是永无止尽地调整你的网站页面。
The medium that carries your marketing message must be easy to transfer and replicate: E-mail, website, graphic, software download.
承载营销信息的媒介必须易于传播和复制：电子邮件，网址，图片，软件下载。
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