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We are pleased to inform you that the fourth issue of Webology, an OPEN ACCESS journal, is published and is available ONLINE now.This issue contains:Editorial Alireza NoruziPrecision and Recall of Five Search Engines for Retrieval of Scholarly Information in the Field of Biotechnology Dr. S. M. Shafi &#38; Rafiq A. Rather  Search Engines and Resource Discovery on the Web: Is Dublin Core an Impact Factor? Mehdi SafariResource Gleaning, From Earlier Times to the Information Age Dr. William W. BostockThe Past, Present and Future of Web Search Research: An Interview with Dr. Amanda Spink Yazdan Mansourian