India, April 4 -- Seen Mona Lisa? No, not the painting in the Louvre - the flower-seller at the Maha Kumbh who unwillingly found herself in the public eye because hundreds of devotees decided to capture her "amber-eyed, dusky beauty". Were you at the Coldplay concert? Even if you weren't, clips of that couple having a cute moment there probably showed up on your feed. Last year, Moo Deng videos became so popular, the pygmy hippo began to be harassed by tourists at her Thailand zoo. See where we're going with this? In a world where everyone has a camera, it's getting hard to draw boundaries on what's OK to shoot and share. Experts offer advice on setting boundaries on both sides of the camera.

Behind the lens

Ask for consent. "Don't just...