Editing Encyclopedia:Search engine test (section)

==Some search engine tests==
# ''Popularity'' – See [[WP:SET#Specific uses of search engines in Wikipedia|Google's trending tool]] below or a regular Google search and use of the "Tools" button.
# ''Usage'' – Identify a term's notability. (See for example [//books.google.com/ngrams Google's ngram tool].)
# ''Genuineness'' – Identify a spurious hoax or an [[urban legend]].
# ''Notability'' – Decide whether a page should be nominated for deletion.
# ''Existence'' – Discover what sources (including websites) actually ''exist'' for possible presentation.
# ''Information'' – Review the reliability of facts and citations.
# ''Names and terminology'' – Identify the names used for things (including alternative names and terminology).
# ''Copyrighting'' – Identify whether material is [[Wikipedia:Copy-paste|copied]], and if so, check the licensing.
This page describes both these web search tests and the web search tools that can help develop Wikipedia, and it describes their biases and their limitations.

The advantages of a specific search engine can be distinguished by ''using'' a variety of common search engines.  The distinct advantages of each are their user interface and, less obviously, their algorithms for compiling and searching their own indexes.
Because a web crawler can be blocked&mdash;specific ones or just in general&mdash;different search engines can list different web sites, and there are more web sites available by URL than are indexed in any database.

The most common search engines are [http://www.google.com/advanced_search Google], [http://www.bing.com Bing], and [http://search.yahoo.com Yahoo]. [[Wikipedia:Search_engine_test#Specialized_search_engines|Specialized search engines]] exist for [[medicine]], [[science]], [[news]] and [[law library|law]] amongst others.  Several generalized search engines exist.  These adapt your query to many search engines. See ''{{section link||Common search engines}}'' below. This page mostly uses [[Google]] instead of [[Bing (search engine)|Bing]] or [[Yahoo! Search|Yahoo]], but aims for generality where it can. For example, it describes [[Google Groups]] (usenet groups), [http://scholar.google.com Google Scholar] (academia), [http://news.google.com Google News], and [http://books.google.com Google Books].