I like that it's easy enough for someone who knows nothing about crypto currency or coding to get started right away without having to learn anything new.
The interface isn't great but if you know how to use Google Chrome then this shouldn't be too much of an issue. It works well as long as there are no major hash rate increases which can cause problems when using older hardware (especially old CPUs). We're currently running at around 10% hashing power compared to our previous setup where we were getting anywhere from 30%-50%.