دانلود کتاب The Hidden Web: A Sourcebook

The "Deep Web." The Hidden Web." The "Invisible Web." All of these terms refer to the same thing: websites that cannot be accessed by search engines such as Google or Yahoo. Reuters estimates that there are 550 billion websites in total, while Google only accesses about 1.4 billion. It takes specialized knowledge to accessâ ''and navigateâ ''the Hidden Web.|Google is certainly a useful Internet search tool for general topics, but most of the information available on the Invisible Web can't be found through Google. This book explains the value of the Invisible Web and how to access it.|Most students and researchers possess only rudimentary Internet searching skills. The majority of school and public librarians are not aware of the breadth and depth of information available on the Hidden Web. This is unfortunate, as the ability to navigate the Hidden Web in schools and public libraries is essential to locating the most current and authoritative information. ||The Hidden Web: A Sourcebook serves as a valuable source of information about the Hidden Web, much of which comprises websites containing statistical information or data from a wide variety of government agencies. The concepts, search techniques, and specific websites presented will be helpful in information literacy instruction and the teaching of research skills.|â ¢ Provides an analysis of the value of the listed websites|â ¢ Explains why standard search engines are not always the best way to conduct online searches|â ¢ Identifies the web-searching skills school librarians need to find the best information on the Internet|â ¢ Covers more than 200 of the most useful websites and provides a description of what each contains |â ¢ Introductory chapters explore the concept of the Invisible Web and its value to librarians and students