One of the major features of Dropbox is file sharing, a natural extension of the service. Dropbox already syncs all of the files that you want to make accessible for your own use on any device. Why not also make it easy to share those files with everyone else?

Obviously, the storage limits on Dropbox accounts are going to limit what you can do with this feature. This is not meant to be a service that you use to share your music folder or your favorite movie. The file sharing features are simply meant to make it easy to share limited amounts of information with your friends. The introduction video on the Dropbox.com front page suggests using the service to share travel photos with friends - a great example of what the service is for.

There are two ways to share the information in your Dropbox folder: through the use of the Public folder and by sharing a folder with specific email addresses.