Good ClickZ article on pros & cons of Google-DoubleClick

Harry Gold on ClickZ gives a good and balanced review of the "Pros and cons of Google and Doubleclick."

• As an industry insider, he gives a sophisticated analysis that is worth the read.  
• This was the most interesting factoid to me:
• Doubleclick's "DART does have a hold on over 70 percent of the ad-serving marketing, according to a March 2007 CIMA/William Blair study. Also on the paranoia side of the equation: the data Google and DART collectively have on the population at large are already rather Big Brotherish, never mind Google extending its cookies' reach onto DART's network of sites. (DART for Publishers powers ad serving for many of the top Web properties.)"