Prune a forum by date?

[Luke]

I know there is a mass prune/move option on the forum... But is there an option, at all, to prune the forum by date? Let's say I want to keep all posts that have been replied to within 6 months, but the rest I want deleted... (essentially deleting the tail end pages of the forum). There is no easy way of doing this other than making a manual query?

[Working4computers]

Sounds like a clever idea :)