Tried four different URLs and all four came back with unusable results (blank squares, weird layouts, etc). Maybe I don't get what this is?
It works best with blog posts or news articles. Check out this example from the Guardian: http://bit.ly/1TlhEMq
I'd love to take a look at the URLs you were trying, if you don't mind sending them through. You can also click the "Show Me a Demo" button to get an idea of how it works!
Doh! I somehow missed this worked best with "article" pages. Tried a few top level domains and was confused by the output. Looks a lot smoother when trying an article URL.
Looks pretty cool. I would add support for the opacity of the image.