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- Search Engines
-- Search Engine Spider and User Agent Identification
---- YahooCacheSystem - what is it?
keyplyr - 11:34 pm on Mar 5, 2012 (gmt 0)Thread source:: http://www.webmasterworld.com/search_engine_spiders/4425062.htm
I filter all IPs and verify authenticity. I catch the occasional imposter, but most all hits using the YCS UA are from ycar13.mobile.bf1.yahoo.com - hence I do not block it, but only make sure it's from Yahoo.
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