Google is using localized search activity statistics to track flu activity across the US:
And in an interesting departure from the Web 2.0 world, they also provide a raw CSV data download for building your own spreadmarts.
Of course, people are raising privacy concerns – but who should be surprised? Assuming Google follows it’s own policies on anonymization and aggregation this is nothing new, and nothing that hasn’t been around on Google Trends for awhile now.




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