One of the keys to getting good speed with BitTorrent is to limit your upload speed to 75% of your actual upload speed. There are several key points here. First, you need to determine what your actual upload speed is. Not what the claimed upload speed is from your ISP, but the actual upload speed. Go to a place that can test both upload and download speeds (http://www.speakeasy.net/speedtest/ is one) and get the actual numbers. Once you determine your actual upload speed, configure your BitTorrent client so that the max allowed upload speed is 75% of your tested value. This still allows plenty of bandwidth for people to upload. The issue is that when your upload speed approaches its maximum value, this will begin to affect your download speed. But throttling back your upload speed slightly, you will be able to get the full download speed out of your BitTorrent client, and you'll still be able to share files and be a get netizen.