When I see something on my FB timeline that I think a friend would like, I can share the photo or graphic or link by clicking on “Share” below the graphic and then selecting “Share on a Friend’s Timeline.”
For all my other friends, a dialog box appears that asks me to specify which friend, and it lets me add a comment to the graphic that I want to share with you.
However, when I try to click o “Post” to share it with you, I get this error message saying that your settings do not allow anyone to post on your timeline, therefore I cannot share it with you unless I send it to you as a private message.