Wikipedia
BTJunkie
BTJunkie was a BitTorrent web search engine operating between 2005 and 2012. It used a web crawler (similar to Google) to search for torrent files from other torrent sites and store them on its database. It had nearly 4,000,000 active torrents and about 4,200 torrents added daily (compared to runner-up Torrent Portal with 1,500), making it the largest torrent site indexer on the web in 2006. During 2011, BTJunkie was the 5th most popular BitTorrent site.