Average eCPM of $0.23 at AdBrite

Reading this article I ran the following numbers

384 million daily impresssions results in a projection of about 11.5 billion monthly impressions across 83,000 sites.

Flat 08 revenue over 07 means about $32 million in revenue - this is my guess.

So that means, on average, their performance network is generating about $32 monthly revenue per site at an average eCPM of $0.23. I would guess this means world-wide.

If you believe Alexa and attribute 25% of their traffic to US and guess that 75% of their revenue is US, then the number becomes an eCPM of $0.69 on 2.9 billion monthly ad impressions.