I've been browsing through some of the over 9,000 questions tagged with math, and I'm seeing tons of problems with it. There are several "categories" of questions that fall under this tag:
Questions that use it as a meta-tag to indicate they are building a math equation, but the problem is not actually related to math. Usually it's related to finding a function/method that completes some mathematical action, which is better off with only the tag for the language they're using.
Example: Does less.css support exponents?
Questions that are just plain math problems and are completely unrelated to programming in any way, needing to be closed as off-topic.
Example: Point laying near line
Questions that have nothing to do with math at all, but more with formatting of numbers.
Example: Keeping “useless” 0s when performing calculations
Questions that are actually about math in a programming context and fit well with this tag. This doesn't seem to include very many questions.
Example: Get results that fall within marker radiuses from database
So with only one case out of five being a proper use for the tag, how useful can we say the tag is? It definitely needs some cleaning up if we're going to keep it, and the tag wiki should be updated to outline more specifically when a question should be tagged with it. What say ye?