通过收费或免费，将自己的链接发到别人的网站上去进行推广，这样的链接就叫推广链接。
早在2008年，央视便曝光百度向没有执照的医药网站出售产品推广链接。
In 2008, CCTV aired a similar expose on Baidu selling links to unlicensed medical sites with unproven claims for their products.
一些用户抱怨百度搜索结果中的推广链接太多，有的搜索结果第一页全部是推广链接。
Some users complain that Baidu carries so many paid items that the first page of results for some searches is entirely promotions.
与大多数搜索引擎不同，百度将推广链接与“真正”的搜索结果混杂在一起，而不对推广链接进行明确标注。
Unlike most search engines, Baidu mixes sponsored links with "genuine" search results without marking the sponsored links clearly.
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