Replying to Revival

So the new kids to NS are learning respect from the respect that we give them. They're using the search bar, and even when they're not they are given an answer and a friendly reminder about how the search bar is so useful. This is definatley a step in the right direction. The problem is when people find a thread from many moons ago and revive them with a post such as "sick." I'll scroll through the ski gabber and see threads that I've seen and commented on months ago. We should have a rule that threads older than two months old shouldn't be revived unless there is a new issue to discuss with it.
Who else agrees, who disagrees?