I see a number of tags at SO that seem useless. Before raising them for possible deletion, I'd like to know, are there any rules that are followed when creating a new flag?
The FAQ page doesn't say anything about tags, and the tag privilege page just says:
What is creating tags?
A tag is a keyword or label that categorizes your question with other, similar questions. When you choose to create a new tag, you're asking a question in a topic that nobody before you (on this site, at least) ever has.
When should I create new tags?
Most common tags already exist on a mature site. You should always favor existing tags; only create new tags when you feel you can make a strong case that your question does cover a new topic that nobody else has asked about before on this site.
Which isn't very explicit. It's obvious to me that there should be a c tag, because c is a computing language and if the question is in c you want to group it as such. But what about tags like dna-sequence. This is on here because the content of the programming problem happens to be about dna sequences. I think these types of tags need to be deleted, because we're not categorizing by content of a programming problem.
Instinctually if I'm parsing a DNA sequence (stored in a string) I would tag with string and whatever language, not what's stored in the string. Am I thinking about this correctly? Is there any FAQ or post anywhere that actually supports my desire to eliminate such tags?