mynameisdom

Very well said. But don't forget the full-length free preview of any song. I loved that "once and only once" feature.

I assume it's successful in part because very few people upload the full 2GB quota in their first ten minutes of using Dropbox. I installed it, poked around with a couple of MP3s and PDFs, and then stopped. I doubt many users of Dropbox upload more than a couple hundred MB at a time.