Page 154 - DLIS408_INFORMATION_TECHNOLOGY-APPLICATIONSL SCIENCES

Unit 13: Internet Based Resources and Service Browsers

Market share and wars Notes

Search engine Market share in May 2011 Market share in December 2010
Google 82.80% 84.65%
Yahoo! 6.42% 6.69%
Baidu 4.89% 3.39%
Bing 3.91% 3.29%
Ask 0.52% 0.56%
AOL 0.36% 0.42%

Self Assessment
Multiple choice questions:
5. A .................... is designed to search for information on the World Wide Web and FTP servers.
(a) Web search engine (b) Web application
(c) Web portal (d) Web master.
6. When a user enters a query into a search engine, the engine examines its .................... and
provides a listing of best-matching web pages according to its criteria.
(a) User ID (b) Password (c) Index (d) None of these.

Search Engine Bias

Although search engines are programmed to rank websites based on their popularity and relevancy,
empirical studies indicate various political, economic, and social biases in the information they
provide. These biases could be a direct result of economic and commercial processes (e.g., companies
that advertise with a search engine can become also more popular in its organic search results),
and political processes (e.g., the removal of search results in order to comply with local laws).

Did u know? Google Bombing is one example of an attempt to manipulate search results
for political, social or commercial reasons.

13.3.1 List of Search Engines
Search engines are the list of Wikipedia articles about search engines, including web search engines,
selection-based search engines, meta search engines, desktop search tools, and web portals and
vertical market websites that have a search facility for online databases.

By content/topic
General
Baidu (Chinese, Japanese)
Bing
Blekko
Duck Duck Go
Google
Sogou (Chinese)
Soso.com (Chinese)
Yahoo!
Yandex (Russian)
Yebol
Yodao (Chinese)
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