As of this posting, there are 3 questions using the "protection" tag. They each describe a completely different aspect of protection: waterproofing, electrical-spike-proofing, and vibration-proofing.
I can envision a lot more questions in the form "how do I prevent X from happening to my robot" or "why do robots have X?" popping up here. There is certainly enough good advice to give in mechanical, electrical, and software design for each of those areas to have their own version of the "protection" tag (eventually, anyway).
So my question is whether "protection" is the best all-inclusive term to use, or if are there more apt tags to direct people to questions concerning "how to prevent your robot from breaking itself".