Dropbox is a web utility designed for backing up the files on your computer and for sharing files.
Dropbox is similar to Drop.io which I’ve been using for months and have written about in the past. Click here to read more about Drop.io.

Applications for Educators
Dropbox is a good way to share files with students and parents. Dropbox is particularly useful for sharing large files like MP3s or slide shows. Rather than mass emailing an attachment you can share a file through Dropbox and save space in your email application.
Dropbox is particularly useful if you regularly work on more than one computer. Using Dropbox you can access and work on files from any Internet-connected computer.