exactly. the pitfall of this thing is that it stores everything in RAM and it is more than possible (I've seen it many, many, many times) to lose everything in a blink if the batteries die and the internal backup battery is dead or bad.
The send button is really cool. It turns it into an HID device and spews a stream of characters out over USB. It would be pretty easy and pretty cool to make a tiny little usb device that can accept that stream every time you hit 'SEND' and append it to a file on a... more robust system.