title: What does connect.facebook.net/en_US/all.js do
body: <p>I'm wondering, what features do the all.js from facebook add to the like button? - I'm trying to implement it, and found a really nice way, even without loading the all.js file, the like works just fine, it will get registered and anything..</p>
  
  <p>But is there something that I will miss? If I just have a simple like button on my page?</p>