Originally Posted by PromoterX

You don't need a tracker anymore - DHT got invented because MPAA took down torrent megatrackers with ease. Now you can upload the torrent file on one tracker and as long as you have seeds, your client will "discover" and "put together" the hash value which will build the torrent information in YOUR client.

http://en.wikipedia.org/wiki/Distributed_hash_table

"Magnet Links" use DHT - Load uTorrent, click ADD URL button and punch it in and see what happens... it's neat how it figures it out. Click on trackers tab while downloading and you'll see NO trackers listed. Of course the more popular a file is the quicker it will "discover" the information and begin download.

magnet:?xt=urn:btih:1041e9ea6c98e10db18a25ebc02291 1bbc384d68

This is why regular people don't want to be bothered with torrents, it can be confusing.