Choose Who Sees Posts: Public, Only Me, Friends, or Members?

There is a drop down list in the lower left corner of the new post window that allows you choose what type of post you are making.

1. Public – Everybody can see this post. The default.
2. Only Me – Nobody but you can see it.
3. Friends – Only members who are friends can see it.
4. Members – Only members, not visitors, can see it.