If you have a number of BitTorrent files you want to seed, but you don't want to dedicate a computer to it, or you don't have a host that allows you to seed files, there's now an interesting third option.
The ADS NAS Drive Kit has a built-in BitTorrent client, and attaches to your local network in a snap.
The review says the BT client is glitchy, and in based on the overall review, I don't recommend this particular drive. But the idea of including an independent BT client in a network device -- that's a great way to keep your main computer unburdened, cut down on power use, and consolidate your large downloads in one network share.

