Most of the questions tagged theory are either closed (because they are advertisements of non-mainstream ideas) or tagged very irrelevantly.
Many people like to pick on meta-tags, I've realised. But as for theory, It is not even a meta-tag. I know it is supposed to describe theoretical questions, but since
- Most of the questions here are theoretical anyway (and in my opinion, that's how it should be).
- theory is not a very good description since it makes people think that this is a very good site to come advertise their own non-mainstream ideas, which is not good.
So why not get rid of it? Or rename it as something like theoretical-physics but that isn't as useful as as the tag experimental-physics, since most questions are theoretical anyway, so it just reduces the limited number of a maximum of 5 tags.