The author points out the essential way to gain customer loyalty is the positive motion experience; Emotion investment, "zero risk"consume, interactive service, and customized service are the important methods to achieve this goal; The knowledgeable hotel staff is the key point to achieve the positive emotion service in this process.

User-centered and encouraging user participates is the main characteristic of interactive service of digital library,this paper simply introduces the mechanism realization how applied Web2.

The library service interaction means mutual relation,which affects mutually and restricts mutually between the librarian and user in the service process.

Research on the Relationship between Gender and Using Behavior of Internet Interactive Services among University Students