[fcr]

if impressions are down, it follows traffic would be

From what I understand it depends on the CTR.

My point is that a lower CPA is largely useless if the volume is also lower.

Now I don't get this. If you want more volume, you buy more impressions, don't you? CPA going up means you get more value for money invested.

Please correcct me if I am wrong.

[axod]

>> "If you want more volume, you buy more impressions, don't you?"

Most of the time bing/live don't have the volume to sell. I've tried raising bid prices to crazy town. Still just small trickle compared with google.