A message link can be shared widely or kept for a chosen group. Privacy starts with the route you use and the setting that suits the conversation you want to have.
How to use this feature
Share the link directly in a private chat, email or closed group when the audience is limited. Review search visibility and pause the link when the moment is over. Avoid posting a private link on a public profile if you do not want broad visits.
A useful example
Tell people the scope of the link. A note such as This is for the book club only helps recipients understand that forwarding it is not the point.
Stay in control
Use the settings that match the share you are making. You can keep a link private, change its visibility, pause it when the moment has passed and shape the messages that reach your inbox. Start with one clear purpose, then adjust your controls as your audience changes.