Very interesting. I'm sick of Reddit, so I'm more than happy to give NewsCred a chance.
Some initial nitpicks:
- the tour video loops, it's a bit annoying
- the credibility score is hidden in the main listings (shows up if highlighting text) - is that intentional?
- the up/down buttons next to "CHOOSE YOUR NEWS SOURCES" are a bit confusing, at first I thought that was a drop-down
- you might want to work on the URLs a bit, shorter and more descriptive is good for both users and SEO, http://www.newscred.com/article/list/id/1 isn't great
- the credibility concept is very interesting, but I'm a bit wary of what constitutes a "top story" because I've already been trained to have a "top story" mean "interesting" (and hopefully, if I'm on the right site, "interesting to me"). "Credible but boring" isn't very appealing.
- can I indicate my personal preference for certain news sources over others? I don't mean this in the sense of "this source is more credible", I mean it in the sense of "I personally want to see more from this source and less from other sources, even if other users might not"
- I suspect filtering out duplicates will be essential when dealing with multiple news sources. Unless a user wants to see different takes on the same article... it's an interesting problem.