Tuesday, October 19, 2010

Exercise 17: Blog 2

1.) what is the advantages & disadvantages of using search engines?
-The advantages of using this different search engines is that, we can easily access the information that we need. And we can get not only one information but more than we like.

-While on the other hand, if we keep on using seach engines, we can definitely become lazy in getting the information that we want, we will not going to thought of reading books for us to be able to get information. And using search engines, we can easily copy and paste the information that we want.



2.) compare and contrast individual search engines and meta search engines.
-The search results are generally presented in a list of results and are often called hits. The information may consist of web pages, images, information and other types of files, while the meta search engines, it sends users to several other search engines and/or databases and aggregates the results into a single list or displays them according to their source. Meta search engines enable users to enter search criteria once and access several search engines simultaneously.


3.) when is it appropriate to use a search engine? when is it appropriate to use search/subject directory?
-If you are looking for different information in one topic, search engines is the most appropriate to use, because you can get lots of information when using it, while, if you are just searching for one topic, or a specific topic, you can use this subject directories because Subject directories are often called subject "trees" because they start with a few main categories and then branch out into subcategories, topics, and subtopics.

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