All sites like the Pirate Bay have the problem of either being banned by Internet providers or shut down by countries which host them.
I believe they have even started looking into putting a Bittorrent tracker (or index) in orbit, which does not help immensely since something on the ground needs to
connect to it.
I propose an alternate method which (in a very half-baked fashion) works as follows:
1) User/Client searches ThePirateBay.org (or similar site) for content, uploads public key as part of its search
2) Server locates content and IP addresses of peers that contain pieces of it
3) Server uplinks IP addresses from previous step to satellite or shortwave broadcast system (some sort of out-of-band communication which does not employ the Internet)
4) Satellite (or shortwave radio broadcast system) globally broadcasts IP addresses of peers hosting desired content, encrypted with the requester's private key (in order to prevent real-time blacklisting by third parties/censors)
5) Client receives and decodes list of peers via inexpensive (preferably home-built) shortwave or satellite receiver attached to the computer
The protocol could be refined to eliminate single points of failure by having multiple index sites for clients to connect to that have full Internet connectivity and some way of reaching the out-of-band communication point (satellite, SW tower, etc.). The protocol could be designed to scale globally since radiowave component of the protocol only needs to transmit very small packets of information (lists of peers)
This, of course, is a very back-handed way of getting to new Linux ISOs ...