Finally got to the point when Syncthing does not completely kill my Nexus 5 on startup, so Bittorrent Sync is uninstalled from all the machines.

While Syncthing may not be ready, so was Ubuntu One file synchronization when I started using that.

I can't see why the people are going to pay $40/year subscription fee for hosting their own data on their own machines with Bittorrent Sync.

P.S. Oh. I should write a note about Ubuntu One too, now that the server-side code is opensourced and I haven't been involved with Canonical for more than 2 years.