Those following the exciting developments relating to the apparent
discovery of trillions of unbound, planetary-mass "nomads", and the
growing interest in the planetary-capture hypothesis, will surely want
to take a look at the following papers posted to arxiv.org recently.

http://arxiv.org/abs/1201.2175 "Planet-planet scattering alone cannot
explain the free-floating planet population"

http://arxiv.org/abs/1201.6582 "Exoplanets Bouncing Between Binary
Stars"

http://arxiv.org/abs/1202.2362 "On the origin of planets at very wide
orbits from re-capture of free floating planets"

RLO
Discrete Scale Relativity
http://www3.amherst.edu/~rloldershaw