If a search engine has an advanced search, it may include options such as specifying format, language, domain, or date range. Remember to follow the advice in Evaluating Sources to determine whether information you locate online is suitable for your information needs. Ohio State Libraries can usually get you what you need without additional payment. If you do find scholarly information through a web search engine, especially if you are off campus, you may be asked for payment to access it. However, scholarly information is often not available through a regular web search. Web Search Engines and related web search tools are helpful for locating background information, news (especially if it’s recent), and public opinion. An example is the Directory of Open Access Journals ( ). social media aggregators Specialized search engines, such as Technorati, Digg, and Newsvine, are sometimes called. Directories are more selective than search engines. search engines can be used to search for people, news, magazine or journal articles, videos, blogs and other social media, products, or services. Web directories – Tools created by editors or trained researchers who categorize or classify web sites by subject.Examples include Dogpile ( ) and WebCrawler ( ). Some of these return the best results from the search engines they search. Metasearch engines – Tools that search multiple web search engines and gives you results from all of them.
![specialized search engines, such as technorati, digg, and newsvine, are sometimes called specialized search engines, such as technorati, digg, and newsvine, are sometimes called](https://netlinkbd.com/images/sharing-snap.png)
Examples include ( ) and TinEye Reverse Image Search ( ). People often opt to use news oriented web sites because they provide quick and easy access to the latest traffic, weather sports and news information. It ignores the rest of the information on the web. There are many types of portals such as, corporate portals, general consumer portals, vertical portals, and personal or horizontal portals.
#Specialized search engines, such as technorati, digg, and newsvine, are sometimes called software#
Web search engines use special software programs (called robots, spiders, or crawlers) to find Web pages and list (or index) all words within each one to make searching large quantities of pages faster.