This little thing has quickly improved the way I work and become organized. Instead of emailing myself documents to work on from home or print somewhere else, I drop them in my box, and have them everywhere. Laptop, desktop, iPhone, internet.
It can be helpful in ministry too. It is really easy to share recordings, song charts, and rotation schedules with your band/team.
Get a couple GB free, on me: https://www.dropbox.com/referrals/NTI3NjkwNTI5