<nettime> search engines

[Taz-Ays-Slath <skwiskwis {AT} yahoo.com>]

Does anyone know of any articles discussing the efficiency of web search engines? 
I have a general idea that search engines can take up to a year to update a down 
web site but I am wondering if anyone has written about how search engines do 
what they do and, espcially, how up do date their hits are.


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