From time to time I see old (3+ years), non-interesting / low quality (no answers at all or having comments asking for clarification without further effort from the OP) questions jumping to the top of page due to recent edits.
Those edits are often retaggings based on discussions here on meta. One example is this: https://superuser.com/questions/450786/about-win-xp-themes
I feel these edits to be just waste of time as those questions are useless, sometimes authors are already not users of the site, maybe either the question isn't interesting today to anybody.
Is it really the best practice to modify the tags without even reading the question? Are we happy with it?
Being more extreme: could we have a process to offer whether we want to close the question instead of editing in case of certain criteria met (age, votes, answers)?
As suggested in the comments, some of these edits come up in the review queue, where appropriate actions can be done, however I've also seen edits from users with 5k+ rep, they can't be educated through reviews.