I use that to locate old posts all the time!! Even today.
It is just so simple to use, just use keys words. For example lets say you are looking for the ‘cheesy cauliflower’ recipe then just type in ‘cauliflower’ and it pulls up every time that that the word cauliflower has been used in past posts. There is bound to be a link in a post to lead to the original. Another example is what to do with the expired coupons… use military or expired coupons and SNAP! there it is. I just love this feature and use it daily.