Alright, now that this site's existence appears to be secured, we could spend some time "cleaning it up".
How about we gather some duplicate tags in the answer and decide on whether they are really duplicates (through comments and up/downvoting)? Don't know how the second phase works, perhaps moderators know more about efficient retagging of questions (that doesn't involve manually editing every single question).
Can we please also be aggressive on down votes? If you dislike a tag-merge, dont just ignore that post. Downvote it.
bitcoin should be linked into cryptocurrency. All questions I have seen on the former are about general principles that apply to all of the latter, and I believe bitcoin is too narrow to warrant a separate tag.
Money Supply (1 follower, 31 questions) and money (1 follower, 11 questions) appear to be good candidates. I dont think there's many potential (ontopic) questions where you'd tag only one and not the other.
Hence I suggest adding the tag Money Supply wherever Money is, and then deleting the Money tag.
Finance (60 questions) and Financial-economics (33 questions) are also potential candidates, but it isn't as clear here. Perhaps someone with more expertise on the subject wants to comment here.
As a third one, Financial-markets (15 questions) comes to mind. Some Financial-markets questions could be relabeled as asset-pricing, and the remainder with financial-economics (or, in case they really are just about market economics, with something completely different).
noisesstand out as particularly useless. $\endgroup$