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In terms of human power, there are also opportunities to allow users to police data with different "social search" models that layer on community interaction to go the last mile beyond where the algorithms take you. There are also more "passive" social search engines that don’t require user tagging and reviews – sometimes a barrier to user adoption - but instead increase relevance in search results by using past click stream analysis or grouping users into certain categories of interests. Such platforms from Eurekster and Collarity are available in private label form for newspaper or vertical sites to plant on their websites.”
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