Abstracts- Libraries and librarians should know how to communicate with users. We outline a unified approach for building a library of collective communication operations that performs well on a cros-section of problems encountered in real applications. The folksonomy is a new method for effective communication with library users. Internet librarianship, library 2.0 and Webinomics are but few examples of the terms that have come to affect our Net-Centric existence. Cooperative organization of web-based resources for Folksonomy is yet another facet of this existence. But it is used forb digital library and net-work communication , totally it used for electronic based or Net-based materials, so it is not really in keeping with the fact it does not cover the physical libraries. This paperv presents the experience gained in using Folksonomy and establishing a Library 2.0 system in a technical University Library for bulding an effective library communication. Using a variation of Referral Technical Research Serice for a limited period, a 30 day snapshot of query language employed by the patrons was developed. A team poured over the data to discern patterns. The pattern(s) were used to optimize tagging relegation by the patrons, this tagging was extended to tangible library information assets. So, our methodology is Operational Research method. In essence, two levels of access was incorporated, one level being static and based on library practice, one level being static and based on library practice, and the other being a level dynamically shifting based on the other being a level dynamical shifting based on the customer profile and cognitive style. The results of this was more user communication and visit of library meterials Keywords-folksonomy,Library2.0, Web2.0 Datamaining , Library communication