frecency
 n.— «Richer personalization through: one-click bookmarking, smart bookmark folders, location bar that uses an algorithm based on site visit recency and frequency (called “frecency”) to provide better matches against your history and bookmarks for URLs and page titles, ability to register web applications as protocol handlers, and better customization of download actions for file types.» —“Firefox 3 Beta 3 now available for download” Mozilla Developer Center Feb. 12, 2008. (source: Double-Tongued Dictionary)

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