Probably not today. AB6CC has several bad reviews of HRD on eHam going back over a year. They probably blacklisted him as a result of one of those. The other guy who left a 0/5 review today isn't blacklisted. What's puzzling is that not all bad reviews have resulted in blacklisting. I wonder what their criteria is? Perhaps they read the review and decide based on the content and not just on the numerical rating.