title: JSON RPC - What is the "id" for?
body: <p>I don't understand what the ID is for in JSON RPC. Also, how bad is it considered to not use JSON-RPC.org's standards when developing a toolkit? There seems to be some ambiguity in the JSON-RPC world.</p>
  
  <p>P.S. The ID I'm referring to is the id in here:</p>
  
  <pre><code>{"params":["Hello","World"],"method":"hello_world","id":1}
  </code></pre>