I am trying to move away from Dropbox, I have WHS2011 and run Bit Torrent Sync as a service, so this is in effect my cloud. With Dropbox, you have an option to select which files are kept in sync with your mobile, using the favourite option. At the moment the only option is to select manual sync and then select each file that is sync'd to your mobile, but there is no way to unselect this option. In summary, there would be files you always wanted to be sync'd and then every so often you want to grab a file but this is a one off, you don't want to keep it sync'd in the future.
