Does google drive work the same way as Dropbox? Cross platform, acts as a folder in your home dir, selective sync, etc? Seriously ready to move on from Dropbox and my google fiber account comes with a free terabyte of google drive.
Install the desktop application: https://support.google.com/drive/answer/2374987 Change sync settings: https://support.google.com/drive/answer/2375083
No native linux support is a bummer, but if you only need to use it there infrequently, the web client is quite capable for manual uploads and downloads.