Research on the benefits for sellers when listing homes on multiple listing services (MLS) from Kevin Gillen, PhD, principal research fellow at the Wilbur C. Henderson Real Estate Institute and adjunct professor of finance, was mentioned in an Aug. 4 TIME opinion piece by Derrick Johnson, president of the NAACP, about whether multiple listing services create a fairer market for home buyers and federal lawmakers’ interest in how private listing networks impact consumers.