Indian Journal of Information Science and Services IJISS is a refereed research journal published half-yearly by the Learning Resource Centre, Bannari Amman Institute of Technology. Responsibility for the contents rests upon the authors and not upon the IJISS. For copying or reprint permission, write to Copyright Department, IJISS, Learning Resource Centre, Bannari Amman Institute of Technology, Sathyamangalam, Erode District - 638 401, Tamil Nadu, India. Dr.M.Suriya Professor & University Librarian Department of Library and Information Science Annamalai University,Annamalai Nagar - 608 002 Dr.A.Amudhavalli Professor & Head Department of Information Science University of Madras, Chennai - 600 005. Prof.A.Srimurugan University Librarian & Head Madurai Karamaj University Madurai - 625 021 Dr. M. Nagarajan Professor & Head Department of Library and Information Science Annamalai University,Annamalai Nagar - 608 002 Dr.K.Chinnasamy Head & Chairperson School of Library and Information Science Alagappa University, Karaikudi - 630 003 Dr.S.Mohamed Esmail Reader Department of Library and Information Science Annamalai University, Annamalai Nagar - 608 002 Dr. Krishan Gopal Librarian Jawaharlal Nehru University New Delhi - 110067. Dr. Shalini R. Urs Executive Director and Professor International School of Information Management University of Mysore, Mysore - 570006 Dr.Harish Chandra Librarian Indian Institute of Technology Madras Chennai - 600 036 Prof. Shabahat Husain Professor & Chairman Department of Library and Information Science Aligarh Muslim University, Aligarh - 202 002 Dr.George Fredericks Professor & Chairperson Department of Library and Information Science University of Western Cape, South Africa Prof. Robert Davison Department of Information Systems City University of Hong Kong Hong Kong SAR Prof.Allireza Noruzi Department of Library and Information Science University of Tehran Tehran, Iran Associate Editor Dr.A.K.Santra Professor & Head Department of Computer Applications Bannari Amman Institute of Technology Managing Editor Dr.A.Shanmugam Principal Bannari Amman Institute of Techhnology Editor-in-Chief Mr.S.Sivaraj Head, Learning Resource Centre Bannari Amman Institute of Technology Editorial Advisory Board Editorial Assistance Mr.C.S.Senthil Senior Lecturer Department of English Bannari Amman Institute of Technology