The concept behind NoteBook is excellent and opens up a whole new range of Mac functionality. However, it is very similar to a rival product called NoteTaker. After giving both an intensive test drive, I have to say that the latest (1.6.6) release of NoteTaker is FAR superior - in terms of functionality, features, ease of use, configurability, aethetics, speed, etc. Not that NoteBook is bad - in many ways it rocks. Its just that NoteTaker does everything it does and more and just looks that much better at the same time.