Virtual Community is the main form of t Internet, and the Virtual Community of On-line Game is he next generation of Game as well.

Independent travel has become a new popular way of traveling along the coming of Information Era, which gives rise to the emerging of a new functional part within travel industry called Online Travel Community.

Building method for virtual community trust model;

Through analyzing the forms of virtual communities,the research tries to discuss the advantages and disadvantages of sharing knowledge in virtual communities,and supplies some methods for improving virtual communities.

By analyzing the applications of ICT into higher education and the importance of teachers professional development (TPD), the author puts forward a approach based on virtual communities to TPD at colleges and universities.

The particularities of the internet have changed the traditional mode of human intercourse,forming a new intercourse space——virtual communities,in which people use nicknames and establish a kind of interpersonal communication similar to that in real life.