Apologies if this counts as "bumping" my question as previously asked on Language. It's only just dawned on me that quite likely the SO internal search engine is the same across all sites, so others may be interested here.
Here's the link. To summarise - similar questions come up repeatedly. Often they get closed, with a link to the earlier instance of that question. But it's often hard to locate that earlier instance (because exact wording may vary quite a bit, among other reasons). So I asked for an enhancement along the lines of...
Increment a count against existing question when a new one is closed as "exact duplicate" thereof, and make that count available as a "sort results" key in searches.
Apart from making them easier to find once the links build up, Questions which start to accumulate high "dupcount" values would attract more views, and would probably get progressively tweaked to maximise Answer quality on what would in effect be the "showcase" answers for questions which in my opinion ought to be considered more important, since people keep asking them.