I've seen many other people ask for this feature. It would be nice to have a checkbox option on each sensor to hide it from displaying Down status. Laptop computers are a prime example...I have sensors gathering statistics of available disk space, network card traffic, etc. But when the user shuts down and leaves the office, I see the laptop listed as Down. I'd like to specify that I never care about this device being down, I just want to gather statistics from it when it's online.