Why Isn't There a "Google Kids"?

[Commentary] Google should create Google Kids, a search engine that filters the Web for children. Think back to when you were a kid and your parents dropped you off at the library. In the children's section, the only "inappropriate" stuff to be found was Judy Blume's Forever, which someone's older sister had usually already checked out anyway. Similarly, Google Kids would be a sort of children's section of the Web, focused on providing high-quality results based on age.