I haven't used a public site since Suprnova so I don't know about the health of public p2p sites at all. The private side is absolutely not stagnant, new sites pop up all the time and you can still find all the niche stuff you want to find by just nudging the enthusiasts with requests.
A lot of them seed from home, with humongous servers, and there are preservation programs going on in various places.
A lot of them seed from home, with humongous servers, and there are preservation programs going on in various places.