The current state of our understanding the nature of the baryon content of galaxy groups, derived largely from a large body of X-ray observations, leaves us with two key questions. First, what are the relative fractions of hot, warm/hot, and neutral gas in galaxy groups, and how is each phase distributed within groups? Second, how has the baryonic content of galaxy groups evolved over time and what is its relationship to the dynamical evolution of the group? I will dicuss results from our investigations of the HI content, the properties of bent double radio sources, as well as deep searchs for diffuse synchrotron emission in groups that are now shedding light on the the evolution of the baryonic content of galaxy groups.