As is well known, 23% of noders are actually dogs. This means you should be friendly and approach them cautiously, but also that they can make great, loyal friends. If you find one of your noding acquaintances has a cold node, it is likely that they are actually a healthy dog, and you should treat them with the appropriate sensitivity. Oh, the wonders of cyberspace!
However, a warm node gives you no such clues. You're on your own, Jack.