Its day 5 of UIR. I have learnt the differences between different search engines, like Google, Metacrawler and Yahoo. They have their similarities and differences.
We used keyword variations to help us in finding the topic that we are researching on.
Variations like -
usage of 2 factor authentication in banking industry and
authentication methods used in the banking industry.The search engines gave the following search results:
Google returned about 600000 results
Yahoo returned about 200000 results
Metacrawler returned about 80 results
The common similarity between the 3 search engines are that they do return websites that give definitions of what is 2 factor authentication
http://en.wikipedia.org/wiki/Two-factor_authentication.
The differences is that Metacrawler gives specific search results like
why 2 factor authentication is used,
how is 2 factor authentication used, the
effect of 2 factor authentication, while Yahoo and Google do not give as much specific search results like Metacrawler.
Also, Google and Yahoo returned many irrelevant results starting from page 5 results.
Therefore, Metacrawler is the best among all 3.