CloudSync is intended for use by innovators, developers, and businesses to synchronize content directly between mobile devices and private cloud storage. This model offers unlimited use - see the Free version for use on a single folder.
In this release your cloud is hosted by Google: you must have a Google account and register for private storage. Storage is currently free within reasonable limits, however Google requires that a credit card be on file for purchase of additional use. See http://code.google.com/apis/storage/docs/signup.html for the full story - and to register.
Once CloudSync is connected to Google storage, use its file system browser to mark folders/directories for synchronization up, down, or bi-laterally. You can synchronize automatically when content changes, periodically, or on-demand. See http://davidcheney.wordpress.com/cloudsync-for-android/ for details, limitations, and support.
CloudSync also offers a simple Intent-based API.
