Sharing, Chatter

In Chatter, Sharing (as an action on a feed post) lets a user re-surface an existing post to another audience - a Chatter group, a record's feed, or their own profile feed - so people outside the original post's scope see it. Unlike a Comment (which stays on the original post) or a Like (which is a reaction), Sharing propagates the post to a new feed context while preserving a reference back to the original.

Sharing is the Chatter action that propagates a post from one feed to another. Users can share a post to another Chatter group, to a specific record feed (e.g., an Account), to their own profile feed, or back to their followers. Sharing preserves the link to the original post - reactions and comments remain distinguishable between the original and the shared version, and the shared post shows provenance. Admins control who can share via the Chatter user-interface settings and Chatter-specific permissions.

Sharing vs. Repost is worth clarifying: older Chatter UIs exposed a Repost action that behaved similarly; Share is the modern label. Sharing plays a complementary role to Chatter Groups (the primary scope for collaboration), Follow (subscription to a feed), and Topics (content tagging). Mature Chatter adoption programs train users to share selectively - over-sharing floods feeds and degrades signal; deliberate sharing elevates the best content to the audiences that need it.