I remember this genius edu. researcher (Alan Kay) talking about his dog: "...and my little dog, Watson..." I wondered why he would emphasize the diminutive nature of his adult dog. The closest guess I came to was: Even though this guy had no kids, his mind/body still is "programmed" to respond to baby-like features. That might explain why your cute pictures calm the trolls. Then again, I'm no neuro-socio-biologist.