The ease of use, it's so simple to send files back and forth or even just check in with one another. I can't think of anything that I don't like about this program! It is easy to set up and get started using. You will have people asking where they can find their file all day long once you start sending them stuff via strape. I really love how easy it was for my staff to figure out how to utilize it. So many times we would email each other attachments but then realize later that we never actually got those emails because someone deleted them without reading them first. Now everyone has access to everything right away as well as being able to easily keep track of what needs to be done next by checking off things from a list.