On Friday 28th March, TorrentSpy, one of the main torrent tracker sites definitively closed. According to the site, the legal burden was becoming too heavy. Having the feeling that they could not preserve the interests of their users, they closed their site. Since 2006, MPAA was suing TorrentSpy for facilitating piracy.
Will it change something? Probably not much. Many tracker sites are available. TorrentSpy will disappear from toolbars and from filters of tools such as BitChe.
A theoretical interesting question: does the closing of a major site help or reduce piracy. On one hand, a wealth of torrent trackers have vanished. On the other hands, more people will connect on the currently available torrents thus making them more efficient in terms of sharing.