Google announced that the public DNS service they launched in December 2009 is now the largest public DNS service out there.
Google said, "We're the largest public DNS service in the world, handling an average of more than 70 billion requests a day."
So I guess webmasters had a reason to be wary. Those using Google Public DNS no longer have to use Chrome or Google Search or surf sites with AdSense or DoubleClick ads for Google to know what they are doing on the web.
Of course, they have their privacy polices.
In any event, A WebmasterWorld thread has one senior member making a sarcastic remark:
if goog is your DNS it doesn't matter if you using their SE or not.ya know....cause they just wanna make the web better. *gag*
Do you use Google's Public DNS? I don't but I do use Chrome - so it doesn't matter.
Forum discussion at WebmasterWorld.

Comments:
Andrew Whyman
02/15/2012 02:10 pm
I have it set up as a fail over DNS only, I use OpenDNS otherwise. I also use Chrome so either way it doesn't matter.
Michael Martinez
02/15/2012 04:36 pm
I'm still waiting for someone to explain or confirm how Google's DNS is the largest on the Internet. So far it's just an egregious marketing claim.
Guest
02/15/2012 05:45 pm
It doesn't matter if you use Chrome, it is a matter of changing the default settings