Yahoo searches websites that contains specific keywords found within the query. When using the Yahoo search engine you are not actually searching the entire Web, only through the Yahoo index. If yor query receives no hits Yahoo will give you the option of searching using the Alta Vista search engine which will search the entire Web. You can also allow Yahoo to feed yor query into other search engines.
Yahoo has a good user interface and a easy-to-navgate subject catologue. However only a small portion of the Web has actually been catalogued by Yahoo.
b) Describe how the Google search engine works and give one advantage and one disadvantage in this method of searching
Google uses a crawler-based search engine. The "crawler" visits a webpage, reads it and follows links through to other pages. These pages are than saved and catalogued. The search engine searches through the pages stored in this catalogue to find matches with a query and sorts them in order of relevance.
An advantage of Google is that it is capable of doing something called "deep crawl" meaning that Google is capable of gathering many more pages for your website. However Google does not support meta keyword tags. Meta tags are inserted into the head area of pages and are used to communicate information users may not be concerned with.
c) In your view explain which search engine you prefer to use when searching the web and justify why you have this preference
I prefer to use the Google search engine over Yahoo because it is more simple in terms of function and design, as opposed to Yahoo which contains more links, graphics, advertisements etc.
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