As an experiment in 'six degrees of separation', it would be very interesting to see if the subjects find the pictures on Facebook. It's a novel way of connecting with strangers, that's for sure.
But the question you have to ask yourself is "what is my motivation?" Some people just don't understand the explanation "because it's interesting". Some photographers learn this today, unfortunately, by photographing in public spaces and getting arrested.
So is this a humanitarian exercise or just naive curiosity? If the latter, you'll probably find yourself in uncomfortable territory somewhere down the line. Times we live in unfortunately. If you have some kind of quasi-conceptual drive, you could present them together with (and importantly) other found images. Then you've created a context for the images to exist and a way to justify, creatively, as author, your presentation of the pictures. Lots of photographers experiment in appropriating found images, some quite risqué, but they only get away with it as artists. It could get into 'One Hour Photo' territory if you don't have a creative excuse!
There are only two types of photographers today, in the eyes of others - sex offenders and artists.
Last edited by batwister; 02-16-2013 at 02:43 PM. Click to view previous post history.