We want to reduce duplication in the issue queue but we want to do it in a friendly way.
There are (at least) two parts to this:
getting rid of existing duplication - is there an easy way to flag issues as duplicates and who gets to close them if they are? I know little or nothing of this process at the moment (assume there is one tho)
reducing incoming duplication - wouldn't it be nice if it worked like Get Satisfaction (and probably many others) where it does a search of your title and suggests existing duplicates that you have to check and confirm are not the same before you create your own new issue... not perfect but could be v helpful?