Unfortunately, some of these "kiddie porn jerks" get their kicks from the seemingly mundane images I printed regularly. My previous post referred to a "dodgy" lab - and I was well informed that the images kept for "private viewing" were everyday images of kids taken by their parents. (The moron quite happily showed off his collection to a good friend who had to use their lab after hours) Perhaps the saddest description was of a cute kid in "daddy's galoshes with just a sun-hat on".
Sure, the age of digital will have reduced the risk, but nice, happy family scenes can still be a turn on for some kiddie porn lovers - and these are often still printed at your local Walmart/KMart/Tesco.
You still need to be vigilant, but use your head as well - not everything is what it seems and a wrongful accusation can ruin a family. Be sure of all the facts before you jump the gun!