Is automatically added to questions with empty tag lists?

How is it possible those questions came about in the first place?

1 Answer 1


I seem to recall reading (on meta.SO or the blog) that it happens when a question's only tag is deleted.

  • 1
    Or, more likely, on migrated questions.
    – AviD
    May 22, 2011 at 17:20
  • 2
    Correct. When a tag is deleted, the question can be left with only the "untagged" tag. Same goes on for migrated questions where the tag is banned (and thus removed). May 23, 2011 at 1:57

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