When is it appropriate to create a tag, and how does it work?

Can someone please create the tag foo on Stack Overflow? We need to have it because...

  • Foo is a recent/upcoming release of a popular, established OS/language/framework
  • Foo is a hot new language/library
  • We're currently using some other tag for questions about Foo, but it's causing ambiguity with a separate thing that's also named Foo
  • Other conditions apply which would make foo a reasonable tag to create

Under these conditions:

  • When is it appropriate to create a tag?
  • Who can create a tag?
  • What happens if a tag is disputed?

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To create a tag, one must apply it to a question. Any user with at least 1500 reputation may add new tags to any question by typing the new tag into the question tags field, and submitting1. A tag can be created by adding it to a new question, or by editing it into an existing question. The person who adds the new tag is the creator of the tag.

If you have enough reputation to create the tag, and if you think there is a clear need for a tag, go ahead and create it yourself. Uncommon topics are perfectly valid for a tag, as long as they're still clearly defined. Try to submit at least an excerpt for the tag wiki so others can see its intended use. If the new tag causes controversy, you can always come back to Meta to ask the community to judge it.

If you do not have enough reputation to create the tag, then add a comment on your question. Say that you wanted to add the tag to the question, but do not have enough reputation. Please consider including a reason why you think this tag is appropriate. If someone with enough reputation agrees with you, they will be able to create the tag. Please delete your comment once this has happened.

As an alternative, you can request the creation of a tag by starting a new meta discussion. This gives other people the opportunity to discuss if the new tag is needed. Topics to be addressed in the meta post are, but not limited to:

  • Existing questions where the tag would be appropriate
  • Explain why the tag and such questions are on-topic for Stack Overflow
  • Explain how the tag helps in categorizing and finding those questions
  • Provide an initial tag excerpt and wiki for the new tag, see here.
  • Propose a good fitting name for the tag as they are always lowercase, don't take spaces and have a maximum length of 35 characters.

1 Exception: a small number of tags have been blacklisted because they've been deemed harmful; these tags cannot be recreated.

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