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Robert_Charlton - 9:42 pm on Oct 14, 2011 (gmt 0)
PS: Also take a look at WebmasterWorld's 2007 discussion of some of the core Phrase Based Indexing patents....
"Phrase Based Indexing and Retrieval" - part of the Google picture?
http://www.webmasterworld.com/google/3247207.htm [webmasterworld.com]