Kilrah_il writes "In 2008 Google found correlation between seasonal flu activity and certain search term, a finding that allowed it to track flu activity better and more rapidly than previous methods. Now, Google is offering a new tool, Google Correlate, that allows researched to do the same for other trends. 'Using Correlate, you can upload your own data series and see a list of search terms whose popularity best corresponds with that real world trend.' Of course, Google reminds us that correlation does not imply causation."
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