Single-use tags are pruned after six months. Sometimes, this removes spurious tags. Sometimes, this removes legitimate tags.

After a quick look on Unix SE, I see plenty of legitimate tags that are at risk. I would like a way to declare that some tags are legitimate and should never be pruned. This could be a 10k tool, for instance.

I realize this might not scale on Stack Overflow, but it would work for smaller sites (I'm using Unix as an example because it's the one I know best). A warning when tags are about to expire would be a helpful complement.


Tags that have a tag wiki no longer expire even if they are only applied to one question. Therefore, you can vet a tag by writing a tag wiki for it.

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  • Do we have a reference besides the 'status-completed' tag on that question? It's not listed in the Recent Features. – Lance Roberts Jul 20 '13 at 23:05
  • @LanceRoberts I never got any official reply. I went to search and found this and that question which have a single-use tag with a tag wiki and hasn't been edited in almost a year. I can't be sure that there hasn't been another question with these tag until recently though. The recent features list is maintained by the community, I'm not surprised that a discrete edit to make one question status-completed went unnoticed. – Gilles 'SO- stop being evil' Jul 20 '13 at 23:10

Another idea is to delete a low occurence tag, say, two times. If the tag reappears after that it's permanent.

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If you have enough knowledge about the tag to know that it should stay, it's not hard to come up with a suitable question that uses it.

Post such a question, use the tag, and the problem goes away - the tag stays.

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  • 4
    I agree, this is the only sane solution -- if it's such a valid tag, then it should be used at least once in six months by someone else. – Jeff Atwood Feb 18 '11 at 5:40

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