When do I use a search engine?
•When you have a narrow topic or several keywords
•When you are looking for a specific site
•When you want to do a comprehensive search andretrieve a large number of documents on your topic
•When you want to make use of the features in anadvanced search screen or search for particular typesof documents, file types, source locations, languages,date last modified, etc.
•When you want to take advantage of newer retrievaltechnologies, such as concept clustering, ranking bypopularity, link ranking, etc.
Valenza, Joyce. Neverending Search Powerpoint.