在搜索引擎优化相关的文章中中经常遇到“SPAM”一词，SPAM通常用来指垃圾邮件，不过在搜索引擎营销中所说的SPAM（搜索引擎垃圾）是专门针对那些欺骗搜索引擎的信息。
网站的访问量收到了绊倒安全机制，让人觉得这个搜索引擎在受到一个垃圾邮件程序的攻击。
The volume of searches the site received tripped safety mechanisms and made the search engine think it was under attack from a spambot.
垃圾信息散布者的主要目的就是提高其客户站点在搜索引擎的排名，这个过程被称为 “黑帽式搜索引擎优化（SEO）” 或 “垃圾索引”。
The primary goal of the spammers is to increase the search engine ranking for their client sites, in a process called "black hat search engine optimization (SEO)" or "Spamdexing".
因为这些网站对上网用户找到有用信息毫无帮助，搜索引擎把它们当作对最终用户毫无用处的垃圾，因而把与它们链接的网站也当作垃圾链接来处理。
As these sites do nothing to advance the cause of the web user looking to find useful information, search engines regard them as junk for end users, and thus as junk links to their linked-to sites.
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