Good points. I'll also add: * They automatically screen new uploads for copyrighted music. * They don't monetize videos unless the uploader is invited to beco

Good points. I'll also add: * They automatically screen new uploads for copyrighted music. * They don't monetize videos unless the uploader is invited to become a partner and opts in, which requires a human screening of the partner's content. * They have an established reputation for their user-generated content. * Many users and businesses make good money providing original content to Youtube.