answerly, you really lived up to your name :)

Silly me. I posted this too quickly without reading the full release.

Also of interest, further down:

"TAC - Traffic Acquisition Costs, the portion of revenues shared with Google’s partners, increased to $1.81 billion in the third quarter of 2010, compared to TAC of $1.56 billion in the third quarter of 2009. TAC as a percentage of advertising revenues was 26% in the third quarter of 2010, compared to 27% in the third quarter of 2009.

The majority of TAC is related to amounts ultimately paid to our AdSense partners, which totaled $1.52 billion in the third quarter of 2010. TAC also includes amounts ultimately paid to certain distribution partners and others who direct traffic to our website, which totaled $285 million in the third quarter of 2010."