Think of #firstmoment as a filter on the wider porn caption caption archive: same submission pool, but slimmed down to the exact register you searched for.
Score is the primary sort, freshness the secondary — meaning a #firstmoment post from six months ago can still lead the feed if the community keeps returning to it, while brand-new drops still surface as they earn saves.
Because #firstmoment is tag-locked, the recommendations under each post also stay in the same lane, which means fewer 'that wasn't what I wanted' clicks and more time on the actual fantasy.
As more creators publish under #firstmoment, this page rebuilds itself daily with fresh title, alt, caption and tag combinations — meaning what you saw yesterday is not what you'll see tomorrow.