Filtering out unwanted materials prevents exposure of kids to bad ideas or pictures that they may not comprehend. Part of the content may appear to be innocent, such as inappropriate funny names or jokes, but may convey the wrong message. Blocking is the way of maintaining the internet as a safer place, like a locked door keeps your home safe. The inappropriate thing normally implies that it is not appropriate for the kids. Children have a healthier time online when this content has been filtered.