  Rare radiative decays based on b->s+gamma transitions are among the most
prominent examples of flavor-changing neutral current processes. They benefit
from good theoretical control and experimental accessibility, large sensitivity
to physics beyond the Standard Model, and the availability of many observables.
In this talk I summarize the status of the theoretical understanding of these
decays and review how they may be used to constrain extensions of the Standard
Model, with particular focus on supersymmetric models.
