I know who did it (there were two different reviewers that approved ads for it), but I'll assume it was an accident... But if anyone tries to insert an ad network ad for Matt Cutt's blog, it shouldn't be approved. That user has been trying to get spam ads for Matt Cutt's blog into the ad network for awhile now, and so far I've denied them all. But 2 ads snuck in (I since went in and manually unapproved them). I also kicked that user out of the ad network along with his 15 sites for it.
Hmmm.... glad you posted this, I would of approved the ads since I thought it was just someone trying to get rid of some weight, as some people link to Google of similar sites.
Not a super good idea to egg Matt on by ranking his blog high for SEO/Search Engine Optimization though. Since he has the power to wipe out all ad network sites, every part of digitalpoint.com, etc. from the Google index if he desires...