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A torrent tracker is a simple site with user registration and a directory of links (torrents), structured according to the content of files. File sharing is a service that provides the user a place to store files and access them around the clock. The safety of using torrent clients is sometimes questioned, even though it is easier to "catch" a virus by downloading from file-sharing sites. With one click, you can set the download and upload speed in your torrent client. This is needed to free up your Internet connection for other needs without interrupting the download.