Has the network administrator of your workplace, campus, college or institution banned bit torrent clients from being installed and run? If so, this post might bring good news for most of you.
BitLet.org hosts a java applet that acts as a bit torrent client. You just need to copy the .torrent file link (the link should directly link to the .torrent file, not to some html page where information about torrent is displayed) into the web page and press "Download Torrent" and the applet will do the rest. BitLet.org's settings page can be used to change port numbers and set max upload rate if needed. We almost forgot, this baby supports download resuming.
The only downside of this service is that it needs Java Runtime Environment (JRE) to run. If JRE is not installed, you wont be able to run the applet. You may be able to get the administrator to install JRE by saying you need it for "Educational purposes" or you need it to run "important stuff for an urgent project" (if he's a dumbass he'll fall for it). Anyway good luck with it.