Collab post
A shared post on Instagram/Facebook where two (or more) accounts are listed as co-authors — the same post appears in both feeds, to both sets of followers, sharing likes and comments. A powerful tool for reach and collaborations.
Mechanic: a creator makes the post and invites another as a "collaborator"; after approval both names appear at the top and the post shows up in both profiles' grids. Win: double reach without double posting, shared engagement stats, and clear crediting for collaborations. Use case: influencer partnerships, brand + creator, two friends sharing a moment. It solves the old problem that "tagging" someone didn't put the post in their feed. A central mechanism in the creator economy. Related to creator fund and verified badge.