I read right over that too. Not PMS in my case, probably OFS (Old Fart Syndrome).

Perhaps Amazon is requesting that advertisers submit a few different themes for all of their ads. then they could tag each theme and push those to our KSOs according to our preference. I suspect we would still get the ad from ACME whether we want it or not, but we might be able to get it in our preferred theme. Just a guess.