But the problem is that only the original poster can accept answers, and a newly added (and correct) answer may be pushed so far down the list of answers, it co

But the problem is that only the original poster can accept answers, and a newly added (and correct) answer may be pushed so far down the list of answers, it could take a needlessly long time to overcome the currently highest upvoted solution. Ideally, a user could report something as out of date, or the ranking algorithm would degrade the value of an answer as it ages (which would be a problem for ageless Q/A situations like traditional computer science questions).