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by thinkling 2220 days ago
> Now they've added some mojo to prevent this but still sell location data.

Strava publish a "heat map" that shows aggregated activity of all their users. It's useful for finding common running/biking routes in areas you don't know well. That's how the military bases were found.

https://www.strava.com/heatmap#7.00/-120.90000/38.36000/hot/...

EDIT: I forgot that Strava do sell heatmap data to government transportation departments and such so I fixed the comment.