Can YouTube stop spam comments?

Just few days after videos/trailers of some unreleased Hindi movies were found on YouTube , some of the videos were offloaded from YouTube and an error message was displayed saying that "There are some legal issues with the Video"

But,while reading some comments for few videos on YouTube,I certainly feel that YouTube should keep a track on the comments as well.It may happen that just like Orkut,questions might be raised on YouTube as well!!