I have got the impression that a lot of new tags have been introduced lately. Is it intentional? Frankly, I cannot see why ultra-specific tags such as "simpsons-rule", "boundedness", "dot-product" or "product-space" could be useful.
Note that anyone with editing powers can go look at https://math.stackexchange.com/tags?tab=new and help clean up unnecessary tags. While some of the moderators (yours truly included) do glance at that page every now and then, we cannot, and should not, be the ultimate and sole arbiters on the usefulness of tags. (For example, there are subjects with which I am just frankly not familiar enough to decide whether a given tag is sufficiently broad.)
If you have doubts about whether a particular tag is useful, consider posting to our tag merging thread. We regularly debate issues like that which was raised in this question over there.
Tags should encompass fairly wide subject areas, not a single theorem, result, or property. The tag "simpson's-rule" fails this test. This really lives in the intersection of "calculus" and "numerical methods." If a tag is too specialized, it hides posts rather than organizing them.