If your site is implicated in unethical (or black hat) SEO practices by the search engines, all of your pages might be removed from their indexes.

如果搜索引擎认为您的站点采用了不道德的(即黑帽)seo做法，就可能会从它们的索引中删除您的所有页面。

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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".

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”。

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However, those early black hat SEO techniques were almost on the right path because keyword optimization is important in helping your site rank well in search engine queries.

但是，这些早期的黑帽 SEO 技术在大方向上差不多是正确的，因为关键词优化对于提高站点在搜索引擎结果中的排名很重要。

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Other than trying to scare you into buying every single product the company has ever released, the paper highlights the growing problem of Black Hat SEO, or SEO Poisoning, which (if done right) sends malware-ridden links closer to the top of your Google search results.

ENGADGET: Report warns of the increased use of SEO Poisoning to spread malware

Thus Joe Silverman, CEO of New York Computer Help, an IT outsourced service company, found himself several years ago embroiled with a black hat SEO firm that, unbeknownst to him, exchanged links with non-related websites.

FORBES: One CEO's Experience: Yes, You Can Accidentally Hire a Black Hat SEO