If anyone is interested, I've just written a small Grease Monkey plugin to convert the magnet urls to real torrent urls on moviemagnet.net and movies.io, thanks to torcache.net: http://pastebin.ca/2205840 [EDIT] Updated pastebin URL to point to a new version which includes torrentbutler.eu and removes the jQuery dependency.
I would be trivial to use real torrents, but I could easily get into a significant amount of trouble if I hosted up real torrent files though. Magnet links are just a link, nothing more. It wouldn't help anyone if I was taken down. I'm hosting this in the USA on a linode at the moment.