Joe Gregorio
Well, to be precise, SocialText launched an appliance a little while back, now they have a Managed Service Appliance. So a customer can buy a wiki in a box, have that data behind their firewall, but still outsource the maintenance of that box back to SocialText.
Think of all those other services out there that enterprises would never use because they don't want to lose control of their data, this seems like an interesting approach.