Speech.is reimplements DNS lookups within the browser itself. When coupled with emerging WebRTC P2P networks we are able to push all processing to the client side, shielding us from legal liability.
What's *really* amazing is that I was able to backport some of the censorship resistant properties of the Namecoin
The www.speech.is website has the full nitty-gritty details. However, remember that this is a developer preview!