Think about a system that gives you, as a customer, piece of mind, but doesn't actively intrude on your life. For example, something like Pingdom. They tell you

Think about a system that gives you, as a customer, piece of mind, but doesn't actively intrude on your life. For example, something like Pingdom. They tell you about problems with your systems but don't actively tell you anything if nothing is going wrong. Let's assume you're happy not thinking about Pingdom when nothing is going wrong, and happy with their service when something does happen. Would you appreciate Pingdom silently ending your service when your credit card expires? Would you consider that good customer service? If they do contact you, would you consider it "sales" to get a gentle reminder?