Think of #fis as a filter on the wider porn caption caption archive: same submission pool, but slimmed down to the exact register you searched for.
You'll see fresh drops from the last 48 hours, veteran porn caption classics that still pull views, and the tag-graph neighbors people click through to next.
Because engagement counts (likes, saves, shares) are live per post, the page keeps sorting itself even without editorial intervention — the top of the feed reflects real porn captions demand today, not last month.
Bookmark this tag if you want a direct route into new #fis caption drops without scrolling through the wider porn caption firehose.