slackerinabox
Lifer
With iOS you can't download files directly to your phone. My gf has to copy the Dropbox link in my txt message, email herself the link on her iPhone, then use her MacBook to open up her email, download the mix and then sync with her iPhone.
With android I can upload a mix (MP3 or WAV format) to Dropbox and then my brother can download it to his phone and play it via whichever music app he wants to on his G2 or any other android device.
Why not just use the dropbox app? Also, I find google drive, amazon music cloud, and google music easy enough