NZB files exist to simplify the locating of files on Newsgroups without having to manually search through groups and headers to find what you need. The sites targeted are SOHunt, TorrentSpy, NiteShadow.com, BTHub.com and TorrentBox.com, Ed2k-It.com, NZB-Zone.com, BinNews.com and DVDRs.net. Isohunt.com, BTHub.com and TorrentBox.com all owned by one individual
Another couple of interesting cases here are TorrentSpy and ISOHunt, because they are search engines. The legality of hosting torrent files instead of pirated material still has never been fully tested, but both these sites don't even host torrent files. They search other sites torrent archives and display search results, just like how any search engine works.
Source:
Slyck
Written by: James Delahunty @ 27 Feb 2006 7:55