That's an easy to answer question.
Just have a look at Youtube's terms of service in
Article 5B states:
Content is provided to you AS IS. You may access Content for your information and personal use solely as intended through the provided functionality of the Service and as permitted under these Terms of Service. You shall not download any Content unless you see a ?download? or similar link displayed by YouTube on the Service for that Content.
That's clear enough, isn't it?
Just wanted to know facts about above statement. Is it ok since youtube video downloaders can be DL'd from the CNET site itself. No offense to CNET, just wanted to know the truth. Thanks!