Harald Schendera - If you are using BitTorrent (BT) for file sharing, you are at risk of getting caught by your internet service provider (ISP). You may even be charged with a lawsuit for committing copyright infringement. All this as a result of the six-strike policy that will be introduced in 2013.
Six strikes in a nutshell: The first two steps consist of getting notices from the ISP. In the second two steps, you shall acknowledge what you did. In the last two steps, you will get punished. One form of punishment is bandwidth throttling (making your internet connection really slow).