Here's an interview with Ash Maurya of WiredReach, makers of BoxCloud.

Who is your average user?
Anyone that has ever needed to share or send files with other people.

What value are you providing them?
If you have ever struggled with email to send large file attachments, or tried to coordinate around ftp, you know that something as basic as sharing files is much harder than it needs to be. With our drag-n- share functionality, we make sharing files dead-simple without any emailing or uploading. You simply download a small application and drag files to share them instantly. Once shared, people can then access your files over a regular browser using a simple web based interface - they don't need to download or install anything.

How do you generate revenue?
We will always offer a basic account that will be 100% FREE that allows people to share up to 1 GB worth of files per calendar month.
In addition, we will offer one or more Premium accounts that will increase or eliminate this bandwidth limitation along with other features like file backup and synchronization.