  We discuss the long range nature of the molecules produced in recent
experiments on molecular Bose-Einstein condensation. The properties of these
molecules depend on the full two-body Hamiltonian and not just on the states of
the system in the absence of interchannel couplings. The very long range nature
of the state is crucial to the efficiency of production in the experiments. Our
many-body treatment of the gas accounts for the full binary physics and
describes properly how these molecular condensates can be directly probed.
