I was just adding the tag [ng-grid] retroactively to some older Stack Overflow posts, until I noticed all Stack Overflow posts older than April 2013 about ng-grid didn't have that tag... Probably the tag was only created around that time.
And it turns out to be true. According to the [ng-grid] revision link it was created on the 29th April 2013.
Does it make sense to retag older Stack Overflow questions retroactively once a new tag is created?
- Does it help in linking new questions?
- Does it help users in finding the question through Stack Overflow's search?
BTW, these are the posts I suggested a retag for, but there are still more...: