This is pretty cool. It would be absolutely amazing if I could see the shared count for my site, not just for a url. In fact, I could probably submit a list of URLs through the API to make things easier for you (although with the way you're looking up the shares, I don't know if you'd end up hitting their API limits trying to look up 1,000 URLs for a site). But that's something I would find tremendously useful - just being able to see the shares on one particular URL isn't that useful to me. Nonetheless, cool :)