Google street view and child security

This website - Stopinternetpredators.org - holds the opinion that Google Map’s street view feature is a danger to the security of children and families. They say that the street view feature can be misused by child predators to target children.  They have unleashed a campaign in which the sole purpose is to ban Google street view.

Sample Google street view image:

What do you think? Are they being too overprotective? Is this a valid concern?