Burnbit turns just about any download into a torrent
A newly-launched service called Burnbit is set to give Web downloads a much-needed punch in the face. Head over to their website, drop the URL to an HTTP download in the blank, and Burnbit automatically creates a torrent file and begins seeding. Burnbit's torrent page shows detailed torrent data as well, including the number of seeders and leechers, health, and MD5 hash.
There's a catch, of course. The host has to be serving files via HTTP; HTTPS isn't supported, nor is FTP. Not yet, anyway. Burnbit has only just launched, however, so I wouldn't be at all surprised to see them working in the near future.