Last night I tested linking Pocket to Mastodon via #IFTTT to automatically share links when I add a certain tag. (See details). Today I discovered something else about IFTTT.
One of the links I used had an old tag to share it to Buffer, and Pocket cheerfully picked up that tag & sent it out again.
That means IFTTT doesn’t know what tags are *new* on a Pocket bookmark. It only knows that the bookmark has been updated, and what the current tags are.