Internet Safety Project - Public or Private Profile

Teenagers should set there social networking profiles to private because there are a lot of strang people that would want to kidnap teenagers or perculate to a photo that they may have up on there profile. Also is sould be private because thay probably do not want a random person to look at what there posting or copie or do something that the teen mite not like vary much. For those resons I just said, is why I am puting my online networking profiles to private.