Youtube search throws up a lot of unrelated content. Now this could be the problem of the author not tagging content well enough OR youtube trying to maximize t

Youtube search throws up a lot of unrelated content. Now this could be the problem of the author not tagging content well enough OR youtube trying to maximize the user visit and just providing him a range of options. I think it is real problem and that could be addressed by focusing on better search or more a crowd sourced list.