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Access limited to certain people or populations In Google do term search and add database. Invisible or Deep Web General User Effective Filter Tools Academic Websites Position/Job Title? Lack of Peer Review Hybrid: Search/Directories Can it be confirmed by other sources? Corporate Subscription Services Source Stated? Is the website updated regularly? Who is the audience? Voice of the Shuttle Purpose Corporate Websites Many kinds of information LII RSS and Email Alerts retrieve deep web resources (automate the process). MetaSearch Currency Who is the provider of the information? Search Tools What's covered and in what detail? Accuracy Alexa Info Service: .info Why is this difficult? Examine Domain Types Is there transitory information provided? Stability/Performance Personal Website (could be academic in nature) Comprehensive? Authority Infomine Assignment #3 Education: .edu Free Internet Objectivity Owned by someone What is meant by free scholarly internet resources ? Pre-evaluated sites Factual? Dogpile Reputation? Evaluating Free Websites Open access to users Ask Librarian's Internet Index Why was the site created? Deep Web Resources Scout Report Examples Web content that cannot be found using traditional search engines. Is there a bias? Commercial: .com Organization: .org Provide Contact Information? Has it been reviewed? Yahoo Current information or is an archive included? Is there a change in the server location? WFU Databases Tip: Often need to broaden search strategy in these resources. Search Engines Google Are there dead links/do all of the links work? Difficult to ascertain origin Anyone can produce Infomine Open Directory Organization Websites Scholarly Is there a balanced presentation of information? Evaluate using proven criteria Most search engines offer basic search and access to directories now. Examples Computers (or spiders ) crawl the web and index pages based on words in title or text in page Links and Reviews What's the solution? US Government: .gov Browse topic by hierarchies Unique information not available elsewhere? Intranets Google Scholar Discipline specific meta-sites Deep Web Tutorial Directories Non-profit organization: .net Proprietary (not free) Internet Intute Content/Scope Clusty How does it compare with other resources? Experience/Education? (Free) Scholarly Internet Resources