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- Search Engines
-- Search Engine Spider and User Agent Identification
---- Detecting human users via user agent
lucy24 - 2:27 am on Mar 25, 2013 (gmt 0)Thread source:: http://www.webmasterworld.com/search_engine_spiders/4538613.htm
I remember one Polish robot that appended the current time to its UA string, and spaced its visits just far enough apart that this meant the UA would never be the same two times in a row.
Oh, and its clock was slow ;)
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