I find this concept to be interesting. I find their application to be lacking.
The graphic/ analog flow through the various links of the web is interesting, very interesting. I think it will be useful for people who are not used to searching the web in other ways. So it might be useful to a few people who are used to thinking geographically/ analog, but to those of us who think digitally or were trained in library organization (which most of us older adults were... even though we don't realize it - hence the success of Yahoo with older users) it is not functional.