The Pirate Bay may have been defeated in court – pending an appeal – but BitTorrent technology continues to evolve and mutate in ways that will worry right-holders even more.Meet BitBlinder, a new free tool that claims to let people use BitTorrent with complete anonymity, hiding their IP addresses. Or, as one of its creators explains: “We want to make online anonymity fast, usable and ubiquitous to the point that organisations give up on spying and filtering us”.It’s apparently not as fast as regular BitTorrent use, but it’s fast enough – and the key thing is that it’s free. Previously, using BitTorrent anonymously has involved paying to use a virtual private network (VPN). Among new features promised are the ability to avoid university and corporate firewalls, too.