I gave it a try in a VM for a few hours, hoping to find a replacement to Dropbox and Box.net.
Without diving into the source, my primary complaint was that the whole thing felt unpolished. There were display errors that just needed some TLC, documentation that sorely needed the eyes of a proficient English proofreader, and issues that made me wonder if there were going to be underlying security concerns. (For example, sometimes the path in the URL would be encoded, sometimes not... just makes you wonder what's lurking under there.)
