Merging threads?

I think it'd be useful to merge duplicate threads when there's two topics that are very close to each other. I don't want the stackExchange style "closed as duplicate of x," but I think it would be worthwhile to simply have the comments moved to the oldest thread and transfer any votes that are different users on each topic.

This way, we aren't losing discussion by flat-out deleting topics that are dupes, and we're also able to take some sort of action on threads that are dupes.

Just a thought.