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-- Google SEO News and Discussion
---- Google crawl - not always sending IF_MODIFIED_SINCE
4specs - 7:22 pm on Oct 11, 2007 (gmt 0)Thread source:: http://www.webmasterworld.com/google/3275018.htm
try searching for "HTTP conditional requests in PHP" and Alexandre Alapetite for some code that does all this and works well.
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