BitTorrent is a peer-to-peer file transfer protocol that was used early on to distribute Linux kernel builds. It’s great for quickly distributing large files when you don’t have much server bandwidth. In recent years, however, the protocol has become synonymous with illegal file-sharing of movies and music. So it’s really good to see BitTorrent being used as it was originally intended—in the linked article a Dutch university uses BitTorrent to push Windows updates out to 6500 PCs. Where they originally needed 22 servers and 4 days to distribute the updates, now they only need 2 servers and less than 4 hours. BitTorrent has saved them a lot of time and money.