When you choose to share something with the Public (e.g. when you select Everyone from the audience selector), it’s considered public information. If you share something and you don’t see an audience selector or another privacy setting, that information is also public.
Stuff other people share: If other people share info about you, even if it’s something you shared with them but didn’t make public, they can choose to make it public. Also when you comment on other people’s public posts, your comment is public as well.
Posts on Heyjinni Pages or in public Groups: HeyJinni Pages and public Groups are public spaces. Anyone who can see the Page or Group can see your post or comment. Generally, when you post or comment on a Page or to a public Group, a story can be published to the News Feed as well as other places on or off Heyjinni.
Don’t forget, you can control who you share information with in your profile settings.