I made the suggestion that @teamyoutube update the dislike button because it doesn't actually foster creative/constructive criticsm. And my point was proven. Thanks @AntonioChavezSNpic.twitter.com/vxOXuUF4Up
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Having a few other "emoticons" would do more to foster some debate than just a like/dislike. So that is a good idea.
What if YouTube employed a spectrum of like/dislike? You could represent it with little stars. If you really like something, five stars. If you mostly like it, four stars. Idk, just brainstorming, has anybody thought of this yet? 
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