The lawsuit filed by Click Defense against Google must be viewed as pure advertising. Click Defense sells exactly the kind of service they're accusing Google of not using and the value of the publicity generated by the lawsuit probably far outweighs the damages claimed in the lawsuit. I'm not sure I like the idea.

The notion that it is possible to strongly protect web advertising against automation is absurd, by the way, even if usage filtering techniques learned from anti-spam solutions can probably limit the volume of automated attacks.