through a questionnaire survey of students' response from 6 universities in nanjing, this paper aims to determine their varying degrees of satisfaction about the customized information service based on library2.0 technologies. in so doing, the authors carefully examined the data collected from the returned questionnaires about such key issues as the students' perceptions about the customized information service via a library 2.0 platform, self-initiated use experience of such a mechanism, their achieved information searching results  vis-à-vis their expectations, etc. in addition, the authors also made a comparative study between information providers (i.e. librarians) and information consumers (i.e. students) at chinese and american academic libraries.