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Users were confused as to the difference between "trades" and "swaps"; they were also sometimes unclear on how the bid/ask system worked. Users also remarked that the UI was not sufficiently clear enough about what "buying" a midnight constituted: whether it meant acquiring a midnight (hence, paying to do work), or buying the labor for the midnight (hence, paying for someone else to do the work). This was, by far, the most frequent usability issue we saw.
Users were also confused about what were/weren't clickable. Visual affordances were deemed unclear and hard to follow.
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