Improving your search engine positioning
requires an understanding of the search engine types. The following
information highlights the various types.
(More detailed information on
each search engine are also provided)
Spiders
- These search engines send a spider or robot to the web site after
submission which is indexed into their database.
- www.altavista.com
one of the first and best search engines. AltaVista has one of the largest and fastest
databases of any search engine. A major advantage of AltaVista is the
translation service provided where a web site in a particular language
can be translated by the click of a button to the language of
choice. It is expected that the languages available will be
expanded in future.
- www.hotbot.com
Features a powerful processing scheme developed for the Inktomi search
engine. HotBot revisit the indexed web sites every three to four weeks. It also
has a powerful query interface to enable users to hone in on specific
enquiries.
- www.lycos.com
The well known Lycos "spider" visits web sites where it reads the visible text
and
creates an abstracts based on that information.
- www.webcrawler.com
A once powerful search engine. At present WebCrawler does not
accept new web site submissions and seems only to re-index the
existing web sites in its database.
Directories - Web sites are categorised
and presented in a directory structure. Most directories allows only one
submission per web site. It is therefore important that the
submission be done with care.
Hybrid - These powerful search engines use
the best features of the "spiders" and "directories"
to obtain information and organize it into conceptually related fields.
- www.excite.com
uses its artificial intelligent search engine to extract relevant
information from its large database.
- www.infoseek.com
& www.go.com
are dedicated
consumer portals and it can be argued that these will be the next
generation of search engines. Both keyword and description meta tags
are used.
Meta - use multiple search engines
simultaneously
- www.dogpile.com
uses Yahoo!, Thunderstone, Lycos' A2Z, GoTo.com, Mining Co., Excite
Guide, PlanetSearch, What U Seek, Magellan, Lycos, WebCrawler,
InfoSeek, Excite & AltaVista.
- www.mamma.com
claims to be the mamma of all search engines and uses Yahoo, Lycos,
InfoSeek, GoTo.com, FindWhat, MSN, Askjeeves and NBCi to obtain search results.
- www.infind.com
queries WebCrawler, Yahoo, Lycos, AltaVista, InfoSeek, and Excite. It
removes redundancies, and clusters the results into understandable
groupings.
Other
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