A user has just made the tags ncrna and lncrna for non-coding RNA and long-non-coding RNA respectively. Are these tags worth having? The abbreviations are obscure and not likely to be tried/used by users posting relevant questions. Also there is already a noncoding-rna and I think this would suffice for both ncrna and lncrna.
Unless we get significantly more questions about the various kinds of non-coding RNA, I don't think we need more than the noncoding-rna tag for now.
The abbreviations also don't work well as tags because they become all lowercase, and ncrna is harder to read than ncRNA.