http://youtube.com/watch?v=JMSBlz9tz9Y
On May 2, 2007, AdWords advertisers were invited to Google headquarters for a morning of presentations and discussions with the Google AdWords Invalid Clicks team.
I'm still in the first half-hour (seems to be a total of about 2 1/2 hours) - it's extremely interesting so far.
Grab a listen.
John






