（1）ThinkintermsofAmericancowboys.

    Thegoodguyswearwhitehats.

    Thebadguyswearblackhats.

    Whitehatgood;blackhatbad.Simpleasthat.

    Thereisalsogreyhat/grayhatwhichmeansthatit'sinagreyareabetweenthetwo.

    （2）InrelationtoSEO,itreferstothosewhousetechniqueswhichareunderhandorbreaktherulesofsearchengines.Thingslikehiddenlinksanddoorwaypagesareblackhattechniqueswhichwereusedinthepast.Ingeneral,thebestblackhattechniquesarenotoftenmadepublic.

    对于搜索引擎而言，它是指的一些破坏搜索引擎规律的人的统称。

    （3）BlackhatreferstoSEOtechniquesthatgoagainstsearchengineguidelines.Usingblackhattechniquescangetyoursitebannedifthesearchenginescatchupwithyou.

    黑帽技术其实是调整搜索引擎的规则，一旦被搜索引擎发现，你的站会被ban。