I am currently doing research on p2p technologies, specifically in the area of efficiency. When looking at articles on the topic of Gnutella's scalability, I came across one at http://www.tch.org/gnutella.html that outlines why Gnutella shouldn't be able to scale.

As this was written some time ago, and Gnutella has yet to go down im flames, I am curious as to what happened. Were the author's calculations wrong in the first place? Has the number of users not reached the point that such high bandwidth is required? If neither of the above is the case and Gnutella is indeed fairly scalable, what changes have occured that allow for this scalability?

If any of you can help with this it would be greatly appreciated. Thank you.