Is there any wiki or documentation page with guideline to question tags e.g.
- What tags are obsolete and should not be used at all (e.g. homework)
- What tags are obsolete and should be replaced with other ones?
Alternatively Tags section on question creation screen could help providing different tag colours e.g.
- - grey for regular tags (as today)
- - yellow or orange for tags which are obsolete and should be replaced with some other tags (replacement options could be provided in tag descriptions)
- - red for tags which are obsolete and should not be used at all
Tags section in question creation screen could look as follows:
I believe a small change like that would improve quality and correctness of question tags and help relatively new users of all Stack Exchange websites to tag their questions right.
There could be also some policy changes saying that each "red" tag will be deleted after X days from promoted to "red".