George William Herbert wrote:
There's a known and ancedotally (but not known to be statistically) significant trend of pedophiles attracting victims online.
Also, apparently, of them coordinating amongst themselves to pass tips about possible victims in specific areas.
I'm well aware. In fact, I produced a children's video about Internet predators for my county's public library and elementary schools.
My point is that some measures commonly taken in physical space are ineffective (and possibly even detrimental) in cyberspace.