[Sync: Security Is Our Highest Priority]

Your whole response can be summarized as "trust us," which I don't.  My private data is too important to be left to closed source.  Moved on to syncthing a while back, and I encourage others to do likewise.

[Test Idea:nested shares]

It does!

I'd like to see proof of this as it's absolutely a dealbreaker for me.

When I'm trying to create a new sync-job for a folder within another folder, which is already synced, I get this: "This folder cannot be added to SyncApp as it is part of a folder that is already syncing."

I'm getting the same error. I already have directory /nas/sync/foo shared, and I cannot add directory /nas/sync/foo/bar as a separate shared directory.

What version of SyncApp are you using?

1.0.134 Linux x86-64 (I also tried 1.1.15 and still get the same error)

[security hole in Linux WebUI makes all your files publicly accessible]

The best fix would be for btsync web daemon to default binding to 127.0.0.1 instead of 0.0.0.0. In the meantime you can manually set that in the json config file:

{
  "webui": {
    "listen": "127.0.0.1:8888"
  }
}

[BitTorrent Sync on Synology NAS]

Never said I could, I referred to $700.

And, as the majority of forums I visit have proven, the majority (Or, at-least the majority of the people who are complaining, which, is bias towards to people who have issues, so, I'll give you that) of people have had issues with said applications due to the lack of power that the devices provide.

Each to their own I guess, I'd rather to have more drive space, more power, more flexibility at the cost of ~ $500 extra (Although, amazon claims that they're $650 for a 2 drive set up, although, so you state, apparently they come with drives) & the extras in power, however, if you're purely using it for ~ 6TB or less and only want it to run the nessesities of programs (OS, SAMBA, RAID) then I can see where you're coming from.

Ah, now I understand. Yeah I totally agree, my low-end Synology NAS would not be a good choice if you need massive storage, consistently high throughput, tons of services/daemons running all the time etc.

[BitTorrent Sync on Synology NAS]

What? I'm still confused why anyone would buy a nas that holds two hard-drives, has a terrible CPU, about 1GB of ram and costs $700.

The DS212j only costs $200 without the drives. I actually downgraded from a massive fileserver like you seem to be implying, that had 8 750GB hard drives (largest size at the time) in a hardware RAID controller with an i5 CPU, 4GB ECC RAM, etc. because it was way overkill (you don't need much CPU or RAM to run a file server) and used way too much power. The Synology NAS is already low power but it will go into sleep mode when there's no network access, which was important for me. Being able to do RAID-1 was also important. These two features alone would be very hard to implement with something like a Raspberry Pi... I'd love to hear how you could do it all for under $200 (others have already tried).

Also, the NAS has busybox already installed so you can SSH in and manually write daemons or whatever, but people already have created Synology packages for most services you can think of so it's very convenient (for me, Crashplan).