There's some overlap in various discussions on this board (or busy forums in general).
A related post/similar discussions add-on might be useful.
I think this could be handled via whatever tag add-on gets developed.
Agree that could solve 80% of the issue.
Is it possible for now to make related posts / similar discussions in vanilla 1 or 2 ?
Finding similar threads is a very useful feature, and doing the search before the user posts a new discussion (as uservoice.com) does, prevents duplicate threads.
Vanilla currently has a negative rating on "Preventing duplicate threads" at http://www.forum-software.org/vanilla/review.
So, right now vanilla not possible make similar discussion ?