I wonder if anybody shares my desire for an easy reference list, especially of former members who subsequently rejoin the forum under new names? Sometimes these persons are happy to identify themselves as in the recent case of pbanholzer = Pete B. In other cases people have not done so explicitly but might agree to it if asked. I can think of at least one contributor to iconic amateur images in the past whom I suspect may still be with us though I cannot be sure.
More controversially members who covertly post under multiple names simultaneously could also be identified.