It's easy to use, it allows a lot of flexibility in terms of auction format (which is great), has multiple user accounts (which is great). There are some features which could be improved (e.g., better integration with Google Calendar/Calendar app). Also, while I have no issues with their customer service, their support isn't always the best. Some things are difficult to do without support staff assistance.
My main issue was not having a way to set up an auction using someone else's account and