You can’t mess with Google forever. In February, the corporation concocted what it concocts best: an algorithm. The algorithm, called Panda, affects some 12 percent of searches, and it has — slowly and imperfectly — been improving things. Just a short time ago, the Web seemed ungovernable; bad content was driving out good. But Google asserted itself, and credit is due: Panda represents good cyber-governance. It has allowed Google to send untrustworthy, repetitive and unsatisfying content to the back of the class. No more A’s for cheaters.