Torrent Hound is a torrent meta search engine. As usual all torrents are categorized and sub categorized. All of the torrents are added by their robots which scour the internet for torrents and index them. They have around 8million torrents totaling to 15PB of files. The whole design is simple with a search box for torrents and recent search tags. There is no user registration though. This site is blocked in UK owing to court orders and hence inaccessible.