Ask HN: Have you experience of deploying Raspberry Pi in the field?

My experience with the Raspberry Pi is limited to running two at home as a NAS server and a media player. For those functions I love them for being completely silent and the low power usage.

So I started wondering if anyone is deploying them in production to customers where any kind of servers with limited processing power are required? For example audio/video displays or monitoring of something via a external circuit.

While mine at home have been running non-stop for almost two years without any trouble I am not sure about deploying them in the field.