An interesting blog post by Joseph J. Kerski, Esri Education Manager and a staff in the Coursera GEOINT course.
https://spatialreserves.wordpress.com/2014/08/17/compromising-privacy-while-posting-pictures/
I know where your cat lives. http://iknowwhereyourcatlives.com/
BTW. The cat was just an excuse, in fact we want to know where the owners live. ;))
It's amazing that in 1949 far before Internet era, George Orwell wrote a novel "1984" about total surveillance by authority,
In the society that Orwell describes, every citizen is under constant surveillance by the authorities, mainly by telescreens (with the exception of the Proles). The people are constantly reminded of this by the slogan "Big Brother is watching you"https://www.schneier.com/blog/archives/2015/02/samsung_televis.html
https://en.wikipedia.org/wiki/Big_Brother_%28Nineteen_Eighty-Four%29
http://www.theguardian.com/world/2013/sep/23/orwell-nsa-surveillance-alan-rusbridger
http://www.worldcrunch.com/world-affairs/how-2015-mass-surveillance-compares-to-orwell-s-1984-big-br...
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GIS specialization: https://www.coursera.org/specializations/gis
QGIS, http://www.qgis.org/en/site/
ArcGIS, (online, desktop) http://www.arcgis.com/
Esri, https://www.esri.com/
Geonet, https://geonet.esri.com/
Comparison: https://www.gislounge.com/qgis-versus-arcgis/
Stack Exchange, https://gis.stackexchange.com/
Reddit, http://reddit.com/r/gis
Public Lab, http://publiclab.org/
Digital Geography, http://digital-geography.com/
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"Social Engineering: The Art of Psychological Warfare, Human Hacking, Persuasion, and Deception" by Vince Reynolds
