Anonymous file sharing using Azureus with Tor and I2P
There are various strategies for running BitTorrent trackers and clients with varying levels of anonymity. Currently two approaches are documented, those of using the Tor IP anonymizer and the I2P anonymizer. Both the "public" Tor and I2P networks are still experimental and resource limited.
Anonymity comes at a price, don't expect to download very fast using these networks!
Please DO NOT use Tor for routing peer-to-peer data traffic, it can not handle the bandwidth. They have indicated that they will make efforts to ban such usage if it continues, which will likely affect both legitimate and unwanted use!
Running with The Onion Router (Tor).
Running with I2P.
Read the Azureus FAQ