I found an interesting idea about a BitTorrent based distributed content browser. (still didn't tried how it works)
The author intends to extend it with a distributed DNS system. He seems to be inclined towards Colored Coins but mentions Namecoin also as possibility. May be it would be helpful to contact him and support him with advice if he decides to use Namecoin.
http://jack.minardi.org/software/syncne ... b-browser/
As mentioned above, a major missing piece is domain resolution. This will be implemented with Colored Coins (or something similar such as namecoins.)