The third party would be running their own Nightweb client, then visitors to the website would trigger content downloads on the client, rendered out as a webpage.
This would provide the "public view" without sacrificing the decentralized nature.
In fact, this type of functionality is hopefuly becoming an Internet Standard: http://www.internetsociety.org/articles/moving-toward-censor...
However, Bittorrent is not up to the task, due to NAT issues. UDP NAT puncturing is not present in this stack, right? Thus how is it going through carrier-grade NATs which block all these smartphones?
Disclaimer: working on a similar thing for years Tribler Mobile.
I think it would provide a window into the social network, kind of "Oscar is using this, join him now by downloading the app!"
The implication I see is privacy of people clicking a user link, but the problem already exists now.