Nofollow
Nofollow意思是搜索引擎不会follow,当你发现连接中含有nofollow的tag,此连接就不会被搜索引擎访问。比如在很多blog的留言中,都有nofollow的标签,在wordpress的默认设置中,所有留言都是nofollow的,所以以借助blog留言来招bots访问是没用的。
其实此举也是出于无奈,博客通常遭到spam的侵扰,每天的spam comments就有数百,用了nofollow就算有漏网之鱼,搜索引擎也不会招呼你。
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