Nowadays,mostcommoditiesorservicesareratedthroughcertainchannels.Theseratings,easytoaccess,areplayinganincreasinglyimportantroleincustomers’purchasedecision.However,resultsaresometimesunsatisfactory.　　Thereisnodenyingthatsuchratingsmightbringconveniencetoconsumers,buttheyareoftenmisleadingandunreliable.Asweallknow,mostoftheratingsarebasedonothers’judgmentontheproductorserviceconcerned.Everyjudgmentcomesfromaspecificneedorauniquepsychologicalstate.Apparently,blindlyfollowingothers’advicewillaffectourownjudgment.Anotherfactshouldnotbeneglectedthatsomeoftheratingsaretheoutcomeofacarefulmanipulationofcompaniesorsellers.Ithasbecomeacommonpracticeforsometopayforgoodratingsontheirproductsorservicessoastoincreasetheirsales.　　Therefore,weshouldgiveasecondthoughttotheseratingswheneverwegoshopping.