We've just added Undo/Redo functionality to BeFunky. That means you can delete something if you've made a mistake or bring back what you've undone. It also comes in handy when you want to compare multiple effects. Just apply effects one after another, then use undo and redo buttons to compare the results. It will be faster than ever.
The default undo limit is 10. Registered users can change this from the application settings. If you have a computer with enough available memory, you can increase this number according to your needs.