I shouldn't. I will say that it's not just one application or site or product.
I didn't see anything like it in the "YCRFS 1" thread (http://news.ycombinator.com/item?id=766796).
I think the difference is that we didn't set out to do a journalism app or a publishing site; we set out to solve "the problem" of journalism and publishing, and in the process put an industry on its ear.