  While in the fully-connected limit the solution of the spin-glass model is
known, with the existence of a complex transition on a critical line in the
temperature-external field phase diagram, in finite dimensions we don't know if
a transition is present or not and, if present, if its nature is the same as
the one in infinite dimensions. This work contains a review of the real-space
Renormalization Group methods that have been applied to Spin Glasses,
highlighting both their point of strength and weakness in characterizing the
finite dimensional behaviour of the model.
