You decide to list your entire domain portfolio on Afternic and Sedo and to ensure better chances of a sale, you list them at BIN. Is there a major problem with this? Ok, so you could say that you're screwed if it sells on both platforms at the same time, but how likely is it, really? How about you? Do you list your domains at multiple platforms @ BIN? Have you ever encountered issues? Afterall, promotion is key and it would make absolute sense to list them at Afternic and Sedo with BIN prices in mind, wouldn't it?