We don't have to worry, the way BT works. They're only logging people from certain sites. For those of you who don't know, here's a quick run down.
First, you download a program to get BTs, I don't kow the official name of it, but some examples are Azureus and Shareaza. Then you go to a site and download a tracker, which finds torrents that you want, and downloads them. When you click the link for the SSBM soundtrack here, you grab the tracker, and then start downloading the files (the .torrent is the tracker, but most people dont' even see that file) Once you have the tracker, you start downloading from other people who want the same thing. So, unless you go to one of the sites that the FBI's investigating, you're pretty save downloading, just be sure to look out for fake files(as with all P2P apps) and don't let anyone catch you selling things you BT.