Online video-sharing website YouTube has been tracking user data - and is prepared to hand such details over in cases of copyright abuse, a report explains.

CBS MarketWatch explains that YouTube shared one copyright-infringer's data with Paramount Pictures. In this case, lawyers for the movie company gained a subpoeana to get the information, which later led to litigation against a user who had uploaded 12 minutes of clips from new movie The Two Towers.

The user settled the suit, but said of the affair: "I was happy to utilise YouTube when it was still not clearly established. It felt a bit utopian, even though the days for that were clearly numbered."

Last week, YouTube deleted 30,000 video clips at the request of copyright owners in Japan.