what he meant (i think) is use MongoDB in a lean manner - which is to say, try to get something off the ground, and if it takes off, switch to the most appropri

what he meant (i think) is use MongoDB in a lean manner - which is to say, try to get something off the ground, and if it takes off, switch to the most appropriate DB then (which might be Mongo). I think this is the killer use of Mongo IMO.