To download a torrent file just copy and paste the torrent metafile address (e.g. http://www.example.org/file.torrent) in the input box at http//www.bitlet.org/ and press the “Download torrent” button.
BitLet takes advantage of the Sun Java platform, so if you have any problem, please try to install the latest Java Virtual Machine plugin from Sun: http://www.java.com/.

Goto www.bitlet.org.
Paste a torrent link. I used a torrent link from http://torrent.ubuntu.com:6969/

Once you post torrent link, it will ask you to verify digital signature to install Java Virtual Machine.

After you have installed it, it will prompt you to Chose a directory to save the file into:

It can download multiple files and resume from a list of files.

Cheers,
Pavs