title: Very compact object serialization method
body: <p>I'm building a realtime action multiplayer game in Flash which is using too much bandwidth because it sends message objects as XML (as required by the Smartfox server). I'm now trying to cut down on that by serializing my objects to strings before feeding them to Smartfox.</p>
  
  <p>I've tried JSON but it doesn't help much. Is there another serialization method that is compacter, for example that encodes numbers in Base64 instead of decimals? I don't care about human-readability in this case.</p>