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In a society where data creation is expanding exponentially and distribution is spread over an entire planet, the search for tools to improve accessibility and dissemination of data grows more acute. User-friendliness and instant access to reliable data has rapidly become the main issue of concern for researchers and organisations worldwide. This study investigates the use of Web-mapping technology and its impact on Geographical Information Systems (GIS). The study also investigates the diffusion of GIS to the general public through the use of common web browsers or freeware. It researches the feasibility of Web-mapping as a solution to the current lack of accessible data in the Maltese Islands. The study uses the 1995 Population and Housing Census data in the Maltese Islands as a test case to demonstrate the feasibility of the Web-mapping technologies. The project entailed the carrying out of three surveys: first the current Web-mapping situation, second a pre-review questionnaire and third a post-application analysis questionnaire. The purpose of the surveys was mainly to elicit the reviewers opinions on data accessibility and to propose further systems developments. The study was accomplished through an analysis of current websites having Web-mapping functions, mainly the type of technology employed and the level of interactivity with spatial data through on-line maps. Based on the findings, a full-scale dual system Census project was developed giving an opportunity to both GIS professionals and the general public the faculty to access an extensive amount of data either through Imagemaps (interactive on-line maps) or through a …