Stay away from Torrents
this is the worst way to download something and the chance you will get caught is pretty high !
I would like to put in my two cents and say that we should stay away from this sort of argument in this thread as the OP was simply asking what we use. Torrents are a fantastic method of downloading software and it really is a shame that more people don't utilize it for legitimate purposes. There are a few, however. Some Linux distros offer torrents as a download channel--what's great about it is that the more people that have it and are seeding, the faster your downloads can be. Doesn't have to be dependent on one single webserver, although true that most will suffice for a good speed in other ways of downloading.
The skinny of it is, Torrents are for advanced users. Be careful what you download, thoroughly scan, and if you're worried about your ISP snooping on you, utilize magnet links. uTorrent supports these--do your research if you're concerned about that.
Back on topic, I also utilize uTorrent, currently 2.2.1. I haven't seen a need to upgrade and worry about them limiting functionality in future releases. I have a central media server at my house that I do all torrent downloads on and I have an Android app called Torrent-fu that connects to the web management console of uTorrent and enables me to manage my torrents and downloads from anywhere--it's fantastic!
I don't use torrents, so as a matter of interest what actual material can be downloaded that is legal and that cannot be obtained elsewhere? You don't have to answer this question, just interested.
As I said earlier in my post, quite a few Linux distributions and other open-source software vendors utilize torrents to offload bandwidth from their webservers. I think that mainstream companies don't utilize torrents due to the potential security concerns in addition to the negative connotations associated with torrents in general.