If you do decide to store your documents within the Polaris cloud, you can increase your storage allotment by inviting friends (100MB per person) or downloading the desktop app.
You'll probably want to give the latest version of Polaris Office a pass. The app simply lacks basic functionality for the PC at this point. And the chance that Infraware will spam your friends and business contacts with promotions and other ads should give a more serious user pause.
Sign up for CIO Asia eNewsletters.