What a lot of detractors miss about torrent repositories is how effective a means of sharing files they are, which is why this is sort of big news for the 3-D fabrication community. The biggest and best-organized site out there right now for these files is probably Thingiverse, which is great--it's run by MakerBot Industries, the folks behind the MakerBot Replicator, which we awarded a PopSci Products of the Future award at this year's CES. But it's still a single-source site, and the Pirate Bay has the potential to host a huge number of torrents of these files and distribute them in a volume hardly anyone else could manage.