  Radio afterglow studies have become an integral part of the study of
gamma-ray bursts, providing complementary and sometimes unique diagnostics on
GRB explosions, their progenitors, and their environments. This brief review
consists of two parts. The first section is a summary of current search
strategies and the main observational properties of radio afterglows. In the
second section we highlight the key scientific contributions made by radio
observations, either alone or as part of panchromatic studies.
