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Internet Searching How many Search Engines are there? What is a spider and how is it important to the Internet? What are the three main parts of a search.

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Presentation on theme: "Internet Searching How many Search Engines are there? What is a spider and how is it important to the Internet? What are the three main parts of a search."— Presentation transcript:

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2 Internet Searching How many Search Engines are there? What is a spider and how is it important to the Internet? What are the three main parts of a search engine? What is the name of the major engine in Australia? What is a directory? Which search engine is the oldest? Which search engine catalogs all the web?

3 How many Search Engines are there? n 16367 Major Search Engines n That was last year n Its changing

4 What is a spider and how is it important to the Internet? n The spider, also called the crawler, visits a web page, reads it, and then follows links to other pages within the site. This is what it means when someone refers to a site being "spidered" or "crawled."

5 What are the three main parts of a search engine? n The spider (Searching software) n The index n Search Engine software

6 What is the name of the major engine in Australia? n WebWombat – http://www.webwombat.com.au/

7 What is a directory? n Directories: A directory such as Yahoo (WHICH IS NOT A SEARCH ENGINE) depends on humans for its listing. You submit a short description to the directory for your entire site, or editors write one for sites they review. A search looks for matches only in the descriptions submitted.

8 Which search engine is the oldest? n WebCrawler opened to the public on April 20, 1994. It was started as a research project at the University of Washington. America Online purchased it in March 1995 and was the online service's preferred search engine until Nov. 1996. n THIS IS CONTESTED!!!

9 Which search engine catalogs all the web? n NONE OF THEM!!!!!!


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