Easy to log in, folder structure like windows, notifications that will be send to you if you have left some work undone or need some other details in order to be a fully functional workflow.
If you have access on all the folder tree you can link workflows between them or create workflows on layers for different structures of management or teams. They will be able to see only what they are interested in and not a stuff diagram almost unreadable. Adding this kind of abstract layers help you work more organised and allow you to concentrate only on bits and pieces when creating a workflow.
All the shapes that you will eventually use in creating a workflow are categorised each on their purpose that they will have when creating a process. This is very helpful and allow you not to search random from time stoppers shapes but go directly to to it and use it.
Another useful feature is the possibility in exporting those diagrams in embedded html code. So you don't have to resize the diagram in your html wiki page or help page just copy and paste the code and there you have it, link directly to you diagram.
Also it can export as .pdf, .png, .gif., and if you set a level of security those workflows or parts of them will not be accessible to those that don't have your clearance.
I can't say i dislike it, but i can say that a much more user friendly interface would be a big plus, of course that improving fonts that are used and redesigning a little more sharpened objects would create a pleasant work environment for the eye of the user.
If you already have an encounter with other process designing tool, then prepare yourself for something that it is simpler and have all the functionalities you were used to, but it will take you some time until you will figure this out. If this is your first tool then I can say that it is the best way to start.
I'm using this tool for the past 3 years, i have design in it workflows for Change and Release Management for different teams and products that in the end were successfully implemented. Some of the workflows are still used today, others were improved.