First off, great script! However, you need to alter one line in your code, because the class specified to select the checkbox element is too broad, causing any checkbox with the specified class name to be clicked. I noticed that whenever I was favoriting any videos.
var checkBox = document.querySelector(".yt-uix-form-input-checkbox");
var checkBox =document.getElementsByClassName('yt-uix-form-input-checkbox');
querySelector() works fine, but it's still in the draft phase and some browsers return weird results when the method is used.
It seems like the problem wasn't solved by the code above. The simulated click function might have something to do with it. I'll take a look at it later.
Nice script,worked very good, I like it.
Great script! Thanks for making this. I was getting really tired of seeing every "X liked this video" or comment from my subscriptions, and especially the YouTube recommendations. This fixed that by taking me to uploads by default. If you ever do want to see those, you can always just click the options on the left.
Oh and it does indeed work with the Dec 2012 YouTube redesign.