This is great, but google doesn't need to eavesdrop on us when they compel us to use their avenues for our every action.
Google DNS tends to be one of the fastest DNS servers you can use (just benchmark them against other options). The IPs are anycast, so you will likely be served by the Google data center closest to you.
As for what they log, check it yourself: https://developers.google.com/speed/public-dns/privacy
You might as well use the Comcast ones.
Until then, I'll run my own stuff.
The chaos computer club runs their own, which happens to answer usually just as fast as Google’s DNS. (And which isn’t subject to censorship, Google’s DNS, like Comcast and most US ISPs, censor several domains of piracy websites, although the domains are still existing in the ICANN database, and are reachable through most other DNS servers)