On Drupal Answers, I sometimes ask for black-listing tags that are very bad, or too broad to be useful. Considering there is also the possibility of burninating a tag (removing it from the history of the posts), I am not sure I know when I should ask for black-listing a tag.
For example, on Drupal Answers, I removed the "developing" tag, which was added to 15 questions asked since September. I have already taken care of the tag in the past, and now it got used again.
I imagine that the first time the request should be to burninate the tag, and only when the tag keeps being used, ask for black-listing it. If this is the case, when should a tag be asked to be blacklisted? How much questions should use the tag, after it is removed from the questions using it, for the tag to be considered for black-listing?
It is also true there are tags that need to be black-listed without being used from much questions, or even being first burninated, but I think those are really a minority. I am thinking of drupal, which would not make sense in a site like Drupal Answers, but it is still used on Stack Overflow, where knowing the question is about Drupal is necessary. (The tag is in fact black-listed on Drupal Answers.
As side note, which information should be given when asking for black-listing a tag? Should I say, for example, "This tag was used in the past in X questions; I have removed it, and now it was again used for Y questions in Z weeks."? Do community coordinators/developers see any information about the removed tags used from questions?