I'm building an app that needs to periodically append lines to a server side text file. So far, the best way I've come up with for doing this is using the Dropbox API, where the user has to download the text file, update it, and then upload it back - obviously this is not ideal. What would be the best (free) way to do something like this? I'd like a solution where I don't have to personally host a server, but can use some third party cloud (like Dropbox).
Google's Android Backup Service seems appropriate for this, and is free.