When users reach 1000 rep they gain the Edit questions and answers privilege. Before that, users can suggest edits, but these need to be approved by higher-rep users via the review queues (or by the OP of the post).
Now, improving the quality of questions is generally a good thing. I would argue that improving question quality adds value to the site as a whole. However, the guidelines in our Help Centre also state that:
Tiny, trivial edits are discouraged - try to make the post significantly better when you edit, correcting all problems that you observe.
Editing a post also bumps the question to the top of the homepage. Please be mindful of this and make your edits count, so that the new attention is brought to something substantial.
However, this guidance is a little vague and given that we get relatively few new questions per day, it is still possible for these edits to flood the homepage and drown out these new questions.
(In my opinion, this can be a particular problem with tag edits, where re-tagging a batch of questions can easily flood the homepage, and where tags may often be being added (again IMO) incorrectly. Tags should be used to define the topic of the question. A place, person or other entity is not necessarily the topic of a question simply because they are mentioned in it.)
So, do we need to establish more explicit guidance around editing?
We are not the first site to experience this problem. For example Aviation:SE has established some guidance to avoid similar problems recurring there. I believe that other sites have also created guidance on their meta sites.
Some questions that occur to me are:
- Should we set an explicit upper limit on the number of edits a user should be allowed to make in a row?
- Should there be an explicit upper limit on the number of edits a user should be allowed to make in a day?
- Should we set a higher bar for edits to closed questions?
- Perhaps we should require that edits to closed questions should actually address the problem that caused the question to be closed in the first place? (For example, correcting minor spelling or grammar problems in a question that was closed for being 'Too basic' probably doesn't add much value to the site)
- Should we require that all new tags should be first discussed on meta?
This list isn't meant to be exhaustive. The community may want to include other issues relating to edits in any policy that we agree.