I don't think whybroke was being entirely truthful. Downvoting is already disabled for comments older than a day.
Preventing upvoting of old comments would kind of suck, sometimes you only see really great comments years after they were posted.
Preventing upvoting of old comments would kind of suck, sometimes you only see really great comments years after they were posted.
But perhaps this is desired result. Either way the issue is no longer interesting to me.