How does internet search engine work (Yahoo, Google)?
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Search engines use very powerful or robust program codes which are called crawlers (or spiders), which crawl through the internet looking for new websites, if they find any, then they automatically catch the link to that site and include it in the storage directory. More powerful the crawler, better is the search engine.
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(Don't Forget MSN!)...\n\nBefore I launch into descriptions of the sites, here's the list of the search engines worth looking at:\n\nGoogle http://www.google.com\nYahoo! http://www.yahoo.com\nMSN http://www.msn.com\nDogpile http://www.dogpile.com\nAskJeeves http://www.askjeeves.com and Teoma http://www.teoma.com\nHotBot http://www.hotbot.com\nAltavista http://www.altavista.com\nGigablast http://www.gigablast.com\nLooksmart http://www.looksmart.com\n\nYou wanted other search engines besides Google and Yahoo!, something clean and effective. Truth be told, they are both clean and effective and have an excellent index of web pages to search from.\nFrom the top:\n\n\nIn the "Big Three" you have\nGoogle http://www.google.com\nThis engine seems to be the top choice for searchers because of its clean layout, record-setting number of indexed pages, and intellegent ordering of results. Also popular about it is the way you can enter questions into it, such as math questions and movie times. You can access a list of all the cool stuff you can do in Google Search at http://www.google.com/help/features.html .\n\nYahoo! http://www.yahoo.com\nis also a popular choice for the exact same reasons. It has a slightly different but just as clean layout. It too, provides excellent results,  Yahoo! also has a large number of in-search features, listed at http://help.yahoo.com/help/us/ysearch/tips/tips-01.html. Some people don't like how the main page for Yahoo! search has other things on it. However, a perfectly clean page which has only Yahoo! search can be found at http://search.yahoo.com .\n\nMSN http://www.msn.com\nTotally revamped in the recent years, Microsoft Search is an excellent search engine with great results as well. MSN also has a "clean" search page at http://search.msn.com\n\nThen the more minor (but still useful!) engines: \n\nDogPile http://www.dogpile.com\nThis engine is not actually an engine at all- the site is a "metasearch" site, which means that it grabs results from a great number of search engine and displays them all. A good choice if you're looking for something that probably won't come up in most engines. However, it is a bad choice for general searches, because you'll end up having the same results as you would have had by asking any of the popular engines.\n\nAskJeeves http://www.askjeeves.com\nAsk Jeeves initially gained fame a while back by letting you search by asking questions and responded with what seemed to be the right answer to everything. Behind the scenes about 100 editors who monitored search logs and programmed the engine to respond with the right answer next time the question was asked. Nowadays it relies on a regular search engine, known as...\n\nTeoma http://www.teoma.com\nIt has a smaller index of the web than Google and Yahoo. However, being large doesn't make much of a difference when it comes to the more popular searches, and Teoma is known to provide relevant results for the searches. Some people also like its "Refine" feature, which offers suggested topics to explore after you do a search and the "Resources" section of results which points you to pages that specifically serve as link resources about various topics.\n\nAllTheWeb http://www.alltheweb.com\nYou mentioned clean and effective. Well, since Yahoo! bought out AllTheWeb, they've used it as a "cleaner" look for the exact same results of what you'd get with Yahoo!\n\nHotBot http://www.hotbot.com\nHotBot simply lists the results from Google, Yahoo!, and Teoma. Unlike a metasearcher, HotBot does not combine the results.\n\nGigablast http://www.gigablast.com\nThis search engine has a very small database, and not much used. The only thing worth mentioning is that it has complete reports on when a page was last indexed and modified.\n\nLycos http://www.lycos.com\nLycos is one of the oldest search engines on the internet. Nowadays, it gathers its results
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in google search engine
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It depends on the search engine and it depends on the directory.\n\nA search engine will try to present you with the most relevant pages for the keywords you enter.  Unfortunately they don't always succeed.  Search engines will generally return you a greater variety of results.\n\nA good directory on the other hand won't try to return results from the entire internet.  It should instead be trying to get you the best results from the sites that it has in it.  And to get into the directory the site will normally have been reviewed by a human to make sure that it is what it says it is.\n\nSo when I'm searching if I just need any resource on a particular keyword then I'll be in a search engine.  If I'm looking for good sites in a particular category I'll probably be looking for it in a directory.\n\nThe key differences:\nSearch engines are automated and can be fooled.  Directories should be hand-edited and are hard to fool.  Search engines generally examine and return pages.  Directories look at sites.  Search engines can update within hours for new content.  Directories typically take days or months.  Search engines are usually simpler to use as you don't need to understand a directory structure.  Search engines are typically larger, directories tend to produce higher quality results, but have much reduced coverage.
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http://en.wikipedia.org/wiki/Main_Page just like paper encyclopedia only better\n \nwhat a search engine does is spider the net and look for web pages with key words in them that the rank  then when you look for something with the keyword in the document  it will display a list of document where the key word was found.
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Information from Google:\n\nYour pages use frames. Google supports frames to the extent that we can. Frames tend to cause problems with search engines, bookmarks, emailing links and so on, because frames don't fit the conceptual model of the web (every page corresponds to a single URL). If a user's query matches the page as a whole, Google returns the frame set. If a user's query matches an individual frame on the page, Google returns the URL for that frame. The page is not displayed in a frame because there may be no frame set corresponding to that URL.\n\nIf you're concerned with the description of your site as seen by search engines, please read "Search Engines and Frames." It describes the "NoFrames" tag, which is used to provide alternative content. If, instead of providing alternative content, you use wording such as "This site requires the use of frames" or "Upgrade your browser," you're excluding both search engines and individuals whose browsers don't support frames. (For example, audio web browsers, such as those used in automobiles and by the visually impaired, typically do not deal with frames, which are a visual mechanism.) You can read about "NoFrames" in the HTML standard here.\n\n\nInformation from Yahoo:\n\nYahoo! Slurp (Yahoo's web crawler) has support for frames and makes an effort to crawl complex URLs such as those generated by forms, content generation systems, and dynamic page generation software.
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hmmmmmmmm........i wonder what search engines are for
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No, the search engines don't - The webmasters do.\nSearch Engine algorithms will bury web pages that are attempting to manipulate search engine bots, crawlers, spiders (whatever you want to call them). It's a never ending game.
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depends on how you set up the search criteria or the words or phrases you use.\n\nI'm still at a loss to understand why the search engines don't reference each other.  Like if you search for something on Google and can't find it, why won't Google give you a link to another search engine?\n\nBut, generally speaking, search engines are good! :)
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http://searchenginewatch.com/webmasters/article.php/2168031\n\nBasically. It is really complex.\nThats how they make billions!\n\nTechnically each search engine renders pages differently..\n\nI will post some links up what different main search engines do...\n\nGOOGLE - http://www.google.com/technology/pigeonrank.html\nYAHOO - http://www.ysearchblog.com/\nMSN - http://search.msn.com/docs/help.aspx?t=SEARCH_CONC_HowSearchWorks.htm&FORM=WODD2\n\nhope it helped
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Google is a massive search engine found at www.yahoo.com. It is ranked the most popular search engine on the net.
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Dear Andy,\n\nLike all things made by humans, Internet is also not perfect. Search engines work on a fixed alogorithm and aritificial intelligence. They crawl the net looking and indexing pages depending on the keywords, relevence etc.\nAnd people have found ways to optimise their sites to get better search engine coverage and what is known as "page rank" in Google.\n\nThere are many Search engine optimiser companies which do this type of work.\n\nMore exact details refer to this URL :\nhttp://www.google.com/webmasters/seo.html\n\nHope this helps.\n\nAmit
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A search engine or search service is a document retrieval system designed to help find information stored on a computer system, such as on the World Wide Web, inside a corporate or proprietary network, or in a personal computer. The search engine allows one to ask for content meeting specific criteria (typically those containing a given word or phrase) and retrieves a list of items that match those criteria. This list is often sorted with respect to some measure of relevance of the results. Search engines use regularly updated indexes to operate quickly and efficiently. Without further qualification, search engine usually refers to a Web search engine, which searches for information on the public Web. Other kinds of search engine are enterprise search engines, which search on intranets, personal search engines, which search individual personal computers, and mobile search engines. Different selection and relevance criteria may apply in different environments, or for different uses.\n\nSome search engines also mine data available in newsgroups, large databases, or open directories like DMOZ.org. Unlike Web directories, which are maintained by human editors, search engines operate algorithmically. Most websites which call themselves search engines are actually front ends to search engines owned by other companies
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Yahoo! works better than any other service of it type for me when doing general work/searches. While I use other services including Goggle and MSN, I have the least problems with Yahoo! (and Goggle which runs on top of Yahoo!)...\n\n\nBTW consider yourself luck, when I started teaching the Internet at an adult ed level in '93 there wasn't any search engine that worked  with any reliability... and anything like Y!Answers was only done via text on the Usenet... no voting... no way of searching for answers without reading thru sometimes hundreds of posts... oh and did I mention that being in an academic setting we we had a single ISDN line feeding 30 student and 10 facilty computers but the ISP didn't have enough bandwidth to keep up with us so we frequently crashed the ISP's equipment when we weren't overheating our digital modem... Those were the days :-(
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many  other search engines are now powered by google\n\nso this is how powerful google is\n\n:) gudhaay ;)
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I have been a faithful user of Yahoo search for many years, until just recently.  I noticed that Yahoo does not give me the results i'm searchin for compared to the Google results.  Google has been really impressive lately. \n\nSorry Yahoo... Google has you beat... For Now anyways!
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Google.com. Can search the internet as well as your computer.