New service put.io is a commercial service which has allows you to download torrents using their servers, store the files and then later download them to your computer, or stream them to your iPhone, without a trace.

Obviously you must agree to the terms and conditions, which probably have some sort of ass-covering legalities such as the DMCA.

The service is extremely fast. Collecting an 8gb torrent took only about 10mins. Then downloading it took me about 2 hours. The service also has some sort of realtime transcoding going on too. It can convert most types of video/audio to suite streaming.

The servers are based in The Netherlands, security and privacy is pretty tip top. On their website they state:

Your files are your business. We do not log your location, isp or ip address.

SSL can be configured in the users account panel.

Prices start at $US4.90 for 10gb storage and 10gb bandwidth.

And… There’s a Boxee plugin too.