The U.S. military has responded to privacy concerns over a heatmap feature in the Strava app which displays users' fitness activity -- and has been shown exposing the location of military facilities a
<img src='http://tctechcrunch.files.wordpress.com/2010/07/screen-shot-2010-07-29-at-9-31-10-am2.png' />You've normally got two choices in site heatmapping (figuring out where eyeballs land on your sit