http://blog.searchenginewatch.com/100121-162729Google 2009Q4 成長17%
Revenue到達 $6.67 billion
成長的原因為
-Aggregate paid clicks were up 13% year-over-year and up 9% from the third quarter of 2009.
-Average Cost-Per-Click was up 5% year-over-year and 2% quarter-over-quarter.
-Traffic Acquisition Costs (TAC) increased to $1.72 billion in Q4 2009 compared with $1.48 billion last year. TAC as a percentage of revenues held steady at 27%.
-The majority of TAC is paid to AdSense partners. In the fourth quarter, $1.47 billion of the $1.48 billion of TAC was paid to AdSense partners.