My first thought was "I wonder if their Largest Torrent category counts the lossless Touhou torrent?[1]". Turns out they didn't, though some commenters mention it. It measures in at 848GB (790 GiB), which is incredible considering its content (indie video-game soundtrack remixes). The companion album-art torrent[2] is an additional 20GB.
Any time there is a power outage in our HPC cluster, we have 1000 machines all downloading their new image using bittorrent via Avalanche. We are a small HPC shop. Places like LLNL or TACC have much bigger clusters probably have 10s of thousands of nodes that use Avalanche.
Twice in the last year. Our infrastructure is all on UPS, but we decided not to do so for our compute cluster. Additional hardware was deemed a better way to spend our budget. In the event of an outage, people lose the job that was currently running. All their data is safe. They just need to relaunch the job and they are back in business. Most jobs take just a few days, so it really isn't that big of a deal. Either users wait in a queue for an extra day every time they want to run a job, or once or twice a year they have to resubmit a job that died in a power outage. We chose the latter.
Excellent tradeoff in terms of cost/benefit. More companies should re-evaluate their need for 5 9s and instead look at cases where they can gain efficiencies by doing LESS. Does every single company really need a huge UPS system and backup generators?
Largest is 746 gb? Bull. Largest active, perhaps (ignoring the Touhou one mentioned elsewhere), but I've encountered 1.5 tb and greater. Maybe it's been dropped from a few trackers?
[1] http://www.nyaatorrents.org/?page=torrentinfo&tid=167750
[2] http://www.nyaatorrents.org/?page=torrentinfo&tid=167751