Developer here. Feedback would be much appreciated. I should also shout out to Firebase for the realtime backend, and Backbone.js, for making my javascript a little less of spaghetti code.
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Scrolling the notes is a little difficult. I keep trying to do it, and sometimes it works. Sometimes nothing happens, or I just highlight text; that target's pretty small. (It's particularly annoying when it cuts off a comment I'd like to read.)
Tried to leave a reply, and then it said "Enter a username". Changed my mind, couldn't get back to the commentary without reloading the page.
Chrome / Windows 7
We ask for a username only to give a unique identifier for a comment, and so that you can see which comments are yours. We don't ask for an email or social network link because frankly, I dislike demos that do :-P
I do love the idea of these annotated debates. I wish the last half was pre-annotated, at least with the questions and factcheck.org references. It's a nice way to watch.
I see now that it's acknowledging the mouseover focus by making the scrollbar visible, but maybe that should be more visually obvious. I didn't see it at first.
The widget on the right side looks cool, but the UX overall doesn't make sense for me because I don't want to rewatch the debate or scroll through that tiny region. Is there another way you could structure the information that lets me quickly know the context of the fact-check was, then read the blurb? What you've collected is more interesting to me; I just need to be able to watch the debate clip that will give me context.