I've used it in the past, it doesnt scale at all which would tell me that
there are some fundamental issues with the code beyond the obvious bugs. A
real shame as its a fantastic idea, I used it with a client building a real
estate website in the UK and it helped him delve in to fleshing out his
ideas once he understood the interface intricacies. However he got very
frustrated once we got past about 5 pages, 5-10 links per page.