That makes sense. Since you seem to have found your own quarters-to-dollars machine I've been wondering why you aren't exploiting every possible source of profi

That makes sense. Since you seem to have found your own quarters-to-dollars machine I've been wondering why you aren't exploiting every possible source of profitable traffic. Sounds like a case of diminishing returns. I'm surprised prices @ Bing are higher, I'd assumed lower volume would mean lower competition and thus lower prices. But I definitely understand how the volume they can deliver isn't worth the time spent optimizing their system. Thanks for elaborating.