Pins are the creator's one guaranteed message slot after publishing. Common plays: correcting a mistake without deleting the video, answering "what's the song?" before it gets asked four hundred times, dropping the recipe or product details, and pinning a viewer's great joke to reward the community.
TikTok allows pinning multiple comments, YouTube allows one, and Instagram allows up to three. Strategically, the pin extends the content — a strong pinned comment can carry the punchline, the CTA, or the part two announcement. Pinning a question ("should I make this a series?") also farms replies, which feeds engagement signals.
