I'm trialling a new chat interface in the margin called Talkinator; if you're actually on the site rather than reading the RSS then you can real-time chat with other readers. There's no login or authentication so beware of people pretending to be other people, i.e. me. Just assume everyone's a fraud and you'll be well-served.
As a side note, if you install Talkinator on your web-page using the same room name you'll be hooked into the same conversation, which is awesome.
Yes, I know it's just IRC tarted up for the interwebs. Stop killing my buzz, man.