The interface was a complete mystery to me. I clicked and dragged and hit enter and gave up. I read the manual and discovered the insert key (although I don't have one on my mac laptop) and then used tab. But I need to use my mouse to click on a node and then tab and then back to mouse and tab... seems awkward. Could you make it so i can just click and drag from a node to "pull out" a new node and have that default to have focus so i can just start typing?

With any of these sorts of programs, I think it's good to keep the pen and paper interface in the back of your mind. If it's easier/faster/more intuitive to use pen and paper, I think there's still some work that needs to be done on the interface ;)