You can have copyrighted files uploaded, I believe you can even share them with another account. What you can't do is get a public download link for a copyrigh

You can have copyrighted files uploaded, I believe you can even share them with another account. What you can't do is get a public download link for a copyrighted file. I guess the latter cuts some of the motivation, but plenty of people are still going to be putting those files into the dropboxes.