I really like the video. It is clear, short and nice. I wouldn't change anything.

But as a geek, I would like to access more informations.

1. Screenshots, or even better anonymous demo. 2. How do you get my RSS/twitter/reddit/HN feed. For example do you get my list of subscribed sub-reddit? Do you connect to Google Reader? 3. It is clear you'll be using some machine learning technique to learn from my preferences. Do I have to vote? Have I the possibility to tell I didn't like an article? etc...