I recently used the word pareidolia in a conversation and nobody knew what it meant. This guy can explain it in a much more amusing way than i can in three minutes. Maybe you will be less quick to fall for so called ghost photos afterwards.
Man on Mars Debunk:
JamsPlace - Literally Immersive Gamebooks
James A Hirons – author
JamsPlace - Literally Immersive Gamebooks 
All though I believe in the paranormal and go on investigations and document my experiences on this blog I do have to agree that most of the pictures we see are trick of the eye, especially when people crop out something so small that it creates pixels x
Keep up the good work. Im happy to be proved wrong as a none believer but sadly pictures, vids and word of mouth doesnt do it for me. Weare in an age now where we can create anything to a clarity so fine it seems real enough. I guess what im saying is put me in a room with one and ill believe lol. To the rational mind nothing is inexplicable, only unexplained 🙂