Chris_R - 10:28 pm on Jan 5, 2011 (gmt 0)
The quarterly report goes on to prove this by showing that revenue for Google.com and other company sites is growing much faster than the network sites.
I read the report as saying that revenue growth is equal 3rd Q 2010 say 7% Q over Q and 22% year over year for each.
I read the stuff you quoted as boilerplate lawyer stuff. They have to inform their investors of the risks - they are risks - not projections.
Google isn't "putting" lower paying ads on our sites - they are getting less money for them on average + paying us a commission and that (they paying us) of course makes their margin lower.
People will stop using AdSense when they can make more money overall from another program. This occurs with some, but so far most people can't easily beat AdSense.