The preceding photograph was uploaded to abrunozhu.tumblr.com in August 23, 2011. It shows the backview of a CCTV camera.
As of May 22, 2013, it had 677 notes. Unfortunately, Tumblr servers only seem to keep track of the latest two hundreds or so.
This book tries to tell the stories of the ones still visible - who, what and where they are from and how a CCTV camera connected us all.