Well you can download stuff off of youtube with special programs so there might be something that could download stuff off of other video websites...
Make sure you have an antivirus. I use antivir, which is free. It works really good for me and whenever It detects a virus it beeps and opens a window where I can deny acess, delete, etc.
many of these websites also have legal content as well. Not only do pirates use torrent tracking websites, but those who need to distribute their own stuff(linux distros, for example) use torrents as an alternative to posting on a website and having huge amounts of bandwidth for the downloads
Google for Music, Videos, and Ebooks - Google can be used to conduct a search for almost any file type, including Mp3s, PDFs, and videos. Open web directories are one of the easiest places to quickly find an endless quantity of freely downloadable files. This is an oldie, but it’s a goodie! Why thousands of webmasters incessantly fail to secure their web severs will continue to boggle our minds.