It is reported that a web spider is to be let loose online soon, its job is to track video and audio with watermark for copyright infringement. The spider then report the location of the offending file back to a central system where action can then be taken again offending sites.
More on this spider here: http://arstechnica.com/news.ars/post/20070227-8937.html
More on this spider here: http://arstechnica.com/news.ars/post/20070227-8937.html
