They do often play whack-a-mole at the lower level too...but they also take human reviewers into account so it is not so expensive on engineering time. And at

They do often play whack-a-mole at the lower level too...but they also take human reviewers into account so it is not so expensive on engineering time. And at the higher level they absolutely do penalize people individually to send a message. Watch the opening of this video if you think otherwise http://blogoscoped.com/archive/2008-07-08-n14.html http://blogoscoped.com/archive/2008-07-08-n14.html