The changes make it easier for a user to control who sees what he or she posts to the social network and what is able to be seen on a user's Facebook page. The changes affect your profile page, your posts, and tagging and adds a new addition: A do-over feature if you change your mind about who sees your post.

The changes start with a user's profile page (see image below). Any content on the page will have a drop-down menu beside items there that lets the user know who can see the content--the public, friends, or custom viewers. Those options can be changed with a single click.

Drop-down menus have also been added to posts that users make. Those menus will be refined over time, according to Facebook Product Vice President Chris Cox. "These will make it easy to quickly select exactly the audience you want for any post," he wrote in a company blog.

Facebook is also introducing a sort of "do-over" feature. If you change your mind about who should see a posting after you post it, you can change that with the drop down menu, even after it has been posted.