题目:网店访客来源有
A. SEO ( Search Engine Opimizaion,搜索引擎优化)
B. SEM (Search Engine Marketin,搜索引擎营销)
C. P4P (Pay for Performance,按效果付费)
D. EDM (Email Diret Maketing,电子邮件营销).
E. SNS ( Social Networking Services,社会性网络服务)营销
F. IGA (InGaAderising.游戏植入式广告)
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