I'm monitoring my chilli seedlings remotely, the netduino is monitoring soil temp and sending the temp info to my phone (remotely). Now I'm adding capability to remotely turn on the illuminescent light. (I don't have a cat).
It's good feedback though that you guys are hesitant to hook devices up to the internet. I'm pretty confident it's safe for telemetry information, maybe commands that change your devices' state may be a bit different, I guess it depends on what you want to turn on/off.