Thanks for the links.

With respect to your thought -- what a site loses when there are two people is its sense of identity and its will to live. Writing is (at least for me) an intensely personal experience even when it's not a deeply personal subject. These are my thoughts, not anyone else's. When there are two people there, either one has to be subordinate to the other -- in the sense that editorial control rests with only one person -- or you'll get into fights about style that'll sap your will to write.

Additionally, it's more than twice as complex to maintain a two-person activity than it is a one-person activity. (and 3 people is even *more* complex, because you get into the second- and third-order interactions.)