I'm highly interested from a professional standpoint, it's a fascinating problem with lots of cool graph-theory type implications and room for all sorts of whiz-bang algorithmic voodoo.

Yes, it is. ;-) However...

But as far as email goes, I'm *already* super organized, so I don't need the app at all. This is part of the problem, I guess, because someone who gets to the level where they can appreciate something like this probably doesn't need it, or could otherwise write similar software.

I would offer a different take. Email is a particularly fascinating subject matter. It is a diary of our lives, professional, cultural, lord-only-knows even romantic. It is the conversation between ourselves and our colleagues. It is our banter, our very thought process.

Organizing it is a, not necessarily futile, but a perhaps detrimental process because it might prevent us from discovering hidden "patterns" and "linkages." Once again, I refer back to my "Netflix v. Blockbuster" analogy. Rarely do I know what I am looking for, but mostly I walk out with a smile because I discovered something next to something else. Of course, the downfall of a Blockbuster or a library is that the organization goes back to just one level -- alphabetical within subject.

Perhaps a better parallel would be like Alexa for my email... or, what was it called -- something called Firefly or whatever that used to exist (dunno if it still does), or the smartlists in iTunes. Finding patterns based on what I choose, pick, or click on.