Yes, the main thing about ZeroNet that websites in it work without any central server, basically everyone can deploy own website with zero infrastructure (hosting and domain) needed. When you visit a new zeronet site, it tries to find peers using the BitTorrent
network so it can download the site files (html, css, js...) from them. Each visited site becomes also served/seeded by you.
Here is
Github page of the zeronet, and here is
documentation and
FAQ.
I'm not sure about being able to attend the hangout tomorrow, so if someone mentions about TW in zeronet it would be perfect).
P.S. I'm not zeronet's developer, just its user.