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Chicago - 3:32 pm on Jul 26, 2007 (gmt 0)
this is one of the important reasons amongst others why LS utilities needed to be segmented from general search utilities. by segmenting results you can segment algos and display-- applying new criteria that in your example is unique/distinct from the that of the challenges of general search algo progression.
personalization in LS = social networking and saved search functions not personalized general search query activity.