Most tags are standard categories and either subfields of Economics or specific concepts.
Less specific tags are not useful if, once invented, people misuse them. One example is soft-question. I don't know what the purpose of its invention was (sounds quite meta to me), but I can't find a common theme to the questions tagged with it.
Ignoring for a moment that it seems to be a tag which is rather meta, can we agree to always write at least a short summary for a new tag when we create it? Tag creation requires a specific reputation threshold, so it's up to the established users to enforce up this standard.