I have been selling on there for about 6 months and my sales have dropped from about 1K per month to ZERO! Yardsellr is alllowing my competiton to blockify my items (which usaully they just don't). However they won't allow me to blockify items into any blocks in which I have sold items before. I emailed yardsellr multiples of times with absoulutly NO REPONSE!