Does anyone know of a site that lists various open source data feeds or data stores?  By this I do not mean OS database applications like MySQL or Postgre, but royalty free sources of DATA.  For example, IMDB.com allows you to download their data for free, but it is proprietary and cannot be used for commercial purposes for less than $10k.  It would be nice if there was a royalty free version of that somewhere.  However I'm looking for any source of data in any industry--entertainment, auto, tech, etc.  
Royalty free, Open Source Data
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