Abstract
Abstract Search Engines and Classified Directories have become essential tools for locating information on the World Wide Web. A consequence of increasing demand, as the volume of information on the Web has expanded, has been a vast growth in the number of tools available. Each one claims to be more comprehensive, more accurate and more intuitive to use than the last. This paper attempts to organise the available tools into a number of categories, according to their information acquisition and retrieval methods, with the intention of exposing the strengths and weaknesses of the various approaches. The importance and implications of Information Retrieval (IR) techniques are discussed. Description of the evolution of automated tools enables an insight into the aims of recent and future implementations
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