The first time I came across the word 'Limbo' was in September, 2006. Along with a few classmates, I was in a limbo team - as we were, quoted an email from our tutor Neal White, 'not yet alumni, not quite MA'. It's all because of the lovely dissertation.
Since then this mysterious term deeply captivated me. It's probably the best word to describe myself and my situation at all times. This is an interesting feeling of being neither here nor there, or kind of being forgotten but not quite ignored...:-)
So Limbo of Nodes means a space where nodes can not be clearly defined or categorised.