"Related Posts" sidebar on the forum encourages necroposting.

I don't want to necropost, but I find myself inadvertently doing that by clicking on the posts in the "Related Posts" sidebar on the forum. Most of the posts are nearly a decade old. 

To avoid necroposting, could the "Related Posts" only list posts that will not encourage necroposting? If a post is too old for people to add posts to, maybe it shouldn't appear there.