I was hoping this would be an alternative to Olark. They seem like a cool company but I have constant connection problems with them. I haven't used them long enough to figure out the issue, so it might not be their fault.
Is there any way you could have a 'help desk only' interface? I'd be scared to pop out a dialog at some unsuspecting visitor. I imagine my OCD would kick in and I'd alienate every person I had time to.