wheel - 9:46 pm on Jul 14, 2011 (gmt 0)
The average cost-per-click rose approximately 12%, compared with the same period last year, as aggregate paid clicks rose 18%. Sequentially, the average cost-per-click and paid clicks fell 2% and 6%, respectively.
I'm not quite clear what that last sentence means, other than I'm suspicious that their growth in revenue isn't coming from organic growth in business or market share, but instead is the result of them charging hire prices and paying out publishers less. And there's lots more room still available to them in milking that spread.