As I understand it tags will be removed after some time if they're only used for one question. This question remained untagged when some tags were deleted. I wanted to retag, but the only tag I could think of was gyrator, which didn't exist yet.
There aren't any other questions about it, but it pops up in a number of answers. So, suggestion: if you see an interesting term in an answer which could help leading users to the question, add it as a tag to the question.
An alternative could be to have tags for answers, but I don't know if that's worth considering for a feature-request. What do you guyz/galz think?