Facebook Inc (NASDAQ:FB) has to face the anger of top web-video creators whose videos get posted over and over without permission. So to make it easier for them to protect their content, especially when one of their videos goes viral, the social network has made available a new tool. Facebook users posting copied videos may get blocked Facebook is introducing a video-matching-technology product to help video creators identify duplicates of the ones they already uploaded.In a blog post, the social networking giant said it is working on this initiative with a group of video creators. One is the multi-channel network Fullscreen, which has criticized Facebook on this issue. Jukin Media, a viral-video specialist, and Zefr, which helps marketers track videos online, are other two partners in this... More