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A search engine or search service is a program designed to help find information stored on a computer system such as the World Wide Web, inside a corporate or proprietary network or 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 references that match those criteria. 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. However, while different selection and relevance criteria may apply in different environments, the user will probably perceive little difference between operations in these. Some 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 web sites which call themselves search engines are actually front ends to search engines owned by other companies.

History


The very first tool used for searching on the Internet was Archie. (The name stands for "archive" without the "v", not the character from the 'Archie' comic book series). It was created in 1990 by Alan Emtage, a student at McGill University in Montreal. The program downloaded the directory listings of all the files located on public anonymous FTP (File Transfer Protocol) sites, creating a searchable database of filenames.

While Archie indexed computer files, Gopher indexed plain text documents. Gopher was created in 1991 by Mark McCahill at the University of Minnesota. (The program was named after the school's mascot). Because these were text files, most of the Gopher sites became Web sites after the creation of the World Wide Web.

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7Search - A pay-for-placement search engine that allows advertisers to bid on keywords. Feeds search results to a large network.
Meta Description: [ 7Search a Search Engine That Provides Web Site Information, including email addresses, location, age and site popularity. Information you need to make your selection before you visit. Other search engines or metasearch do not include mailing address. ]

Aqua11.com - Lists advertisers' site in our search engine to receive visitors at a cost-per-click basis and distributes results to a varitey of other search engines and affiliates.
Meta Description: [ PPC effective advertising and targeted pay per click marketing, cheap PPC submission, ads management. Cost effective PPC search engine web site promotion advertising. ]

BoldSearch - Provides premium and free listings for websites.
Meta Description: [ Boldsearch, a division of Internet Services Provider Telania, Inc. Boldsearch, search BOLDLY. Advertisers, we provide premium and free listings for websites. Small, medium sized companies, list your websites. Cheap, Affordable, trackable search listings. Sign up today for a $10 bonus. Boldsearc... ]

BrainFox - Offers low initial bid prices and no fees.

Enhance Interactive - Offers advertising through a network of hundreds of distribution partners, including Excite, EarthLink, and MSN.
Meta Description: [ Delivering pay-per-click value. ]

ePilot - A pay-per-click search engine that has partnerships with NetZero, DogPile and InfoSpace.
Meta Description: [ ePilot is a pay per click (ppc) search engine, receiving over 5 million unique visitors a month. (also referred to as pay for placement, pay for ranking, bid for placement, bid for position) goto ePilot, a leader in internet advertising! ]

GenieKnows.com - Pay per click search engine with an affiliate program.
Meta Description: [ GenieKnows.com offers an extensive suite of Internet search products and services. Our web-based search and marketplace resources are rooted in relevancy: GenieKnows.com is dedicated to providing users a pleasurable search experience that delivers relevant quality search results, while also func... ]

GoClick - Targeted, high-volume website marketing.
Meta Description: [ goClick.com is a leading pay per click (ppc) search engine, receiving over 1.5 million unique visitors a month. (also referred to as pay for placement, pay for ranking, bid for placement, bid for position) goto goClick today! ]

Google Advertising - Allows you to buy advertising on the Google search engine, or on other sites through its AdSense program. Includes a tour and FAQ.

InternetSearchNetwork.com - Focuses on networking their search results into other sites and search engines. Provides XML feeds to several other search engines.
Meta Description: [ An array of search engine technologies, promotional opportunites for your site, and a top of the line affiliate program. You NEED to check out this site. ]

Kanoodle - Distributes results to a large network of other search engines and search box providers.
Meta Description: [ Pulse 360 offers advertisers multiple options for targeting their sponsored links campaigns, including by context, behavior, geographic, local and demographic targeting. ]

Roar.com - Offers a category based search engine and advertising programs.

SearchBidz.com - Offer European advertisers the opportunities to bid on search terms and affiliate program.
Meta Description: [ Providing search engine advertising solutions for the European market. Offering advertising and revenue partnership solutions. ]

SearchenNetworks.com - Search engine mixes natural search, directory listings and ppc listings.
Meta Description: [ Search engine marketing (sem) company based in Long Island, New York. Serves clients within the local and regional area. Also provides professional search engine marketing services to small and medium size businesses throughout the United States. ]

SearchFeed.com - Offers pay-per-click advertising via their categorized search engine, as well as affiliate partner programs.
Meta Description: [ Pay per click (ppc) search engine advertising programs propel online advertising and paid search results distribution to a new level. Searchfeed's sponsored search results distribution programs generate Web site revenue and increase traffic. ]

SearchHere.tv - Offers pay per click advertising with real-time reporting.
Meta Description: [ SearchHere.tv gives you the best search results and keyword bidding. ]

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