I think it'd be cool as long as it doesn't reduce the amount of money that the video uploaders can make off of it.<p>It'd just be more cash to fuel game development.
On a related note:
Nintendo is applying a new policy of putting ads on YouTube videos of their games.<p><a href="http://www.ign.com/articles/2013/05/16/nintendo-enforces-copyright-on-youtube-lets-plays" rel="nofollow">http://www.ign.com/articles/2013/05/16/nintendo-enforces-cop...</a><p>Apparently what they mean by "ensure Nintendo content is shared across social media channels in an appropriate and safe way" is roughly "safe means we make money off it"<p>So it's cool to see Notch mention that he had the same opportunity and didn't take it.