A share is someone sending your content to a friend or posting it to their own audience. It is one of the strongest signals platforms track, because sharing spends the sharer's own reputation. Nobody shares what bored them.
A share does two things at once. It predicts quality better than cheaper signals (the person risked their own taste on it), and it physically carries the post to new viewers the algorithm hadn't picked yet.
TikTok's ranking famously leans on sends. Instagram now shows share counts on reels. The standard creator advice, "make something people send to one specific friend", exists because the send is the strongest vote there is.
Shares run far below likes everywhere, so small absolute numbers are normal. Proportion is the signal.
A clip whose shares are close to its comments is travelling between people. Shares near zero on a big-view post mean the content was watched and left behind. Track shares per reach across your posts and one format usually stands out.
TikTok shares register against the video you pick and pace in alongside its organic numbers. The proportion rule applies double here: shares sitting on top of a tiny view count invert the story they're meant to tell, so size the order to the video's real audience.
For ranking, yes, clearly. A share costs the sharer something and carries the post to new people. Platforms weigh it accordingly.
Mostly no. Platforms show share counts to the creator but not a public list of who shared where. Story reshares on Instagram can be visible to the creator.
A share usually goes to a person or a story; a repost pushes the post to your whole audience through the platform's built-in button. Same family, different reach.
Related terms
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