One of the cool things you can do with Noteflight that is really awkward to achieve with almost any other notation software is a truly collaborative work with multiple authors. Because scores can be shared and optionally made editable by any registered user, the field is open for people to create truly multi-author works.
As great examples of this kind of thing, you should check out:
Noteflight.com still doesn’t have forums, groups, or other such staples of social networking sites which makes it a little hard to kick off a collaborative score like this and attract attention from other users. probably a good way to do that right now is to use your own blogs and sites to start a piece going in your own circle of friends. We’re thinking about how we might introduce more opportunities for these kinds of things while keeping the good things about Noteflight going. In the meantime we’re really glad that some of our users are taking the initiative!