---- AdSense updates their Policies - August 22, 2005
jomaxx - 7:25 am on Aug 23, 2005 (gmt 0)
publishers may not bring unnatural attention to sites displaying ads through unsolicited mass emails or unwanted advertisements on third-party websites
(My emphasis) To me, this isn't talking about bringing attention to the ads necessarily. It's saying that they don't want you promote your site using such sleazy techniques as email spam or forum/guestbook spamming.
[edited by: jomaxx at 7:26 am (utc) on Aug. 23, 2005]