If a child isn't old enough to comprehend and deal with most of the internet, then they should not have access to it or only with someone to teach them.
In my opinion, the web is a tool and should be learned like a powersaw or a drill.
I would just be annoyed if I had to answer 127 * 4 on my phone and would leave the site, because it is a ergonomic hurdle to something that I'm just mildly curious about.
As a parent (there are a lot of them, but I only speak for myself), I'd much rather someone be annoyed and not try something because a trivial question gets in the way, than a child getting put in front of a predator so easily. EDIT: Potentially.
In my opinion, the web is a tool and should be learned like a powersaw or a drill.
I would just be annoyed if I had to answer 127 * 4 on my phone and would leave the site, because it is a ergonomic hurdle to something that I'm just mildly curious about.