I have an obsolete android phone with 4GB free space on it. I wanted to use it as a server for sync. It will be connected to wireless at home at all times and my pc/laptop/tablet will be able to sync files between each other any time by just having that obsolete phone on. When I tried to set it up that way, I realized I can only add a backup folder with a read key. What I am trying to do is very similar to described here: http://blog.bittorrent.com/2013/05/23/how-i-created-my-own-personal-cloud-using-bittorrent-sync-owncloud-and-raspberry-pi/ I realize the only way I can have such setup is to have a writable folder in android device (write key for a backup folder). Please add this feature as a high priority so that people like me can use their old devices that way rather than trashing them. The best thing would be, I can add an SD card or even a flash disk to my old phone and l can have a dozens of gigs of space that I can use!