Duplicate questions are discouraged, but an answer that was up-to-the minute last year may be fairly tired this year, so to encourage people to keep answers up-to-date, particularly the more highly voted questions and answers, perhaps a badge could be awarded for a / [so many] revision[s] of at least [this length] on answers [at least so old] with at least [so many votes] that subsequently receive [so many more votes].
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1If they came through the suggested edit system, this might be cool. But you'd have a very narrow window in which you could earn it. Otherwise, people who can edit normally would (likely) 'improve' things that might not really need improving.– user50049Commented Feb 10, 2011 at 20:38
1 Answer
I'm not sure this is needed. I don't think that editing someone else's answer and changing its substance (which seems like what you're suggesting) is really even allowed. I don't think we want to encourage this behavior.
I'd rather see someone post a new answer to the old question, but we already have Necromancer
for that.
The only situation this doesn't cover is revising your own answer with updated information, but I don't know that a corner case like that is really worthy of a badge, especially since you're getting all of the rep for it anyway.