For teens, he says, such software inspires resentment and only leads to kids looking for other sources of Internet access, like a friend's computer.

FORBES: On The Web's Edge

While a keyword job search for "certified public accountant" might turn up ads seeking a small-business chief financial officer who is also a CPA, semantic-search software would intuit that the user is looking for accounting jobs and list only those openings.

WSJ: Seeking Software Fix for Job-Search Game