Interesting.....

I'm torn as to whether I think this is a good idea or not.

Initially, I'd say yes, because it seems a perfectly good way to filter what children see. On the other hand, it bothers me, because it removes the responsibility of the individual to exercise freedom of choice, and I'm afraid the more censoring technology we create, the less "parenting" parents will do, relying instead on filters such as this to do it for them.