Webserver access log files
Usually all webservers records all processed requests into special
file. This file is named as access log file. The location of this file and
his format depend on the used webserver software and its settings.
For Apache based
servers most frequently are used common and/or combined log formats. The Internet Information Server
(IIS) use own, proprietary format of log files.
The content of log files also is various, but usually for every request
includes the date and time of request, the address of remote host, name
of requested file, code of request result, size of handled data. Also the
log files may contains (and often contains) the referring URL and
description of user agent.
The presence of such information allows to analyze the access log files to
produce useful statistics.
Presence of referring URLs in log files allows to trace the sources of
visitors of your site. And in particular, from what page of search engines.
And due to that the address of search page includes also search phrase and
page number, it's always possible to determine a position of your site for
the given phrase.
Golden Phrases utility use this information to determine the most
perspective search phrases
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